My original ENGR 217 professor quit after the first week of the semester. Dr. Cornejo has been nothing but understanding towards his sections since we fell behind on the material. I recommending taking him since he also explains the lecture well and is open to receiving any questions.

A real one. He is one of the most understanding professors and does give extra credit and grades pretty fairly. Homework is 30 percent of the final grade and isn't too bad. The lab grades aren't in his control so despite Prof Cornejo being a real one 50% of the grade is still out of his hands. Also the final can be tricky.

Cornejo is one of the best physics professors in the PHYS department. Definitely understood more in his class than the 207 class that I took. Very understanding and is there to help you understand the subject more than just looking for a good grade.

Dr. Cornejo kind of got thrown in the deep end as he had to cover for my professor who decided to quit after the second week of class but he has been able to recover decently well other than some lectures he had to cancel due to circumstances. He is very understanding and helpful to his students.

Honestly a very nice and caring individual. I personally hate the class, which does not reflect Cornejo's accessibility and compassion. It is just really sad that our class had many issues outside anyone's control that we couldn't get the best out of it.

Dr Cornejo really does want the best for his students. Dont take advantage of his kindness because he really wants to be helpful. So understand when a member of my family died. Thank you professor

He was thrown into tough circumstances with the rest of us and did the best he could with what he was given. A few of his classes got cancelled due to health issues and doctor appointments. Gave out lots of extra credit and extended deadlines numerous times. Made the final exam very fair since we had missed 5 weeks worth of lecture.

This class is an absolute mess and arguably a waste of time but that is not Cornejo's fault at all. Cornejo started teaching in the middle of the semester due to some stuff and nailed it. SUPER NICE but people took advantage of that really fast :( There's plenty of extra credit and the material isn't hard compared to other professors.

For having been thrown in as a sub in the middle of the semester, I think he did a pretty good job. Super caring guy and very understanding with everyone's circumstances. Would extend homework deadlines if he knew it was a busy exam week for his students. I didn't listen to his lectures much, but when I did he was passionate about the material.

He is probably the best for 217. He gives tonss of extra credit and really cares about us. Def wants us to do well. This class is not hard just finish the hw and labs on time and you will be ok

With all of the extra credit he gives, it is nearly impossible to not pass. He makes the class a very easy A. Labs are the hardest part of this course. Cornejo really cares about students, and it is obvious he wants everyone to succeed. He generously curved both the class and final exam. He is a great choice for this class.

Lab instructions are always vague and PTs are luck of the draw on whether they are helpful or not. Dr. Cornejo's lectures were over material that was mostly already covered in 207, and he ended up being super lenient on homework and gave lots of extra credit.

This was Cornejo's first semester teaching and he got a really bad rap at first. He was a really caring professor who helped students a ton outside of class. He responded to emails quickly and was extremely forgiving . The lectures seemed excessive and a little boring but the homework was short and easy. Take this man if you can

Dr. Cornejo became our prof halfway through the semester and did what he could to help us all the time, whether it be extending deadlines or offering extra credit (LOTS of it). This class is meant to be full of busy work, and it is, but the homework took like 10 minutes to do. Take Dr. Cornejo!!!

Very caring and passionate prof. If you ever have any trouble on a topic, he will happily explain during office hours. He's also very empathetic towards students' situations - provided extra credit, gracious curves, and extensions for assignments. Emails back quickly and is overall just a really nice dude. IMO he was the best prof for this course.

Cornejo joined midyear and was very understanding when it came to students' struggles. He listens a lot. Unfortunately he also lets students push him around a bit when it comes to pushing back due dates and stuff but he's a great dude. He also loves Aggie football so that's a great topic of convo if you want to get to know him.

Professor Cornejo became a permanent substitute for my class this semester and boy am I glad he was. Just a wonderful professor that cares for his students and wants the best outcome for the students. He knows his stuff and knows how to teach it. He does do pop quizzes, but only for attendance,Class is straightforward. If given the option, TAKE HIM

I legit felt bad skipping his class because he's so nice and caring. Much love to papi Juan

Juan Cornejo is by far one of the most caring professors I have had at A&M. Despite having health issues that disrupted his activity during the semester I had him, he fought to have extra optional sessions outside of class for students that needed extra help. He genuinely cares about you and wants to see you succeed. Would be a fantastic mentor.

Absolute legend of a professor. Cares about students more than anyone else. Nicest man alive. 6/5. I was lucky to have him as a prof.

I LOVE this man!!!! He's by far the most caring prof I've had at A&M and I actually enjoyed going to his class. There's extra credit on most of the homework assignment and he's very lenient on due dates and understanding of your circumstances. Take him if you can!

AMAZING HUMAN! Cares about students dearly, he goes above and beyond to help & understand circumstances. Take him & take advantage of his openness by visiting him in office hours! Go to lecture = Great HW grades, Ease with final. LOTS of extra credit-- DONT waste it! Take him if you are willing to put in effort for A, appreciate him!

This may sound weird, but I think his class might have been too easy in the fact that I didn't learn a single thing this semester in this class. I would like to say that he was a good lecturer, but he skipped so many lectures it's hard to really tell... overall, pretty good class.

He cares for his students and grades easily on HW and provides lots of extra credit. The only "difficult" about this course is the tedious lab reports, but as long as you provide what is asked, you'll get a good grade. He provided us with a question sheet for the final and selected problems straight from it.

He did not teach much during the semester. But he is nice and caring.

He genuinely cares about his students. He is willing to work with you and help you undertstand the material. His lectures are enjoyable, and if you do the work and show up to class, you'll pass.

SO SO EASY! AMAZING PROF

He had some troubles with his health a lot, but he always trying to teach you as much as you can. Take him.

Amazing professor!!! Genuinely cares about the students' overall you cant go wrong by taking his class

Man is awesome. Cares so much for his students to succeed, and provides many ways for that to happen. TAKE HIM!!

He wants his students to pass which is rare when it comes to these engineering classes. Gives extensions and actually wants to see you succeed.

He's an awesome guy, clearly cares a lot for his students and tries to do his very best for them. Takes the course seriously but not too seriously. He's the incredibly rare 10/10 engineering professor.

Cornejo is extremely caring, even to us undergrads. His course is extremely easy compared to other profs, and his late policy is very lenient. Go easy on him because he has health problems and is just trying not to let us down. Our final was significantly easier than Ijaz's final. The lecture content is similar to PHYS 207 material.

very flexible with homework deadlines & explains how to solve difficult questions thoroughly. he had to cancel office hours and a couple of lecture due to personal matters, but tried his best to make it up or help out the students as much as possible. he really knows the material in this course and one of the nicest prof I have had.

Cornejo is an awesome professor. Dude cares about his students and wants everyone to succeed. Take him if you want PHYS 217 to be a bearable class.

He is such a caring guy. Dr Cornejo also makes this class incredibly easy to succeed in, curving loads of grades up. I went to four lectures the whole semester, got a 60 on the final and still got an A in the class because I did decent on the homeworks and labs. Absolutely take him if you get the choice.

Dr. Cornejo tries very hard to make the subject matter interesting and encourages everyone to succeed. Very friendly and offers lots of chances for success in his class. GO TO CLASS, he tends to offer extra credit to those who display effort in class.

He is a great guy and very understanding when it comes to his class. I didn't really go to lecture and didn't do great on the final, but the homework and labs were easy and straightforward and I got an A in the class.

Best professor ever! If you have the chance to take him you must. Very understanding and tries to work with you. He is also a lenient grader and will help you out if you need it. 1000% I would take him again, he is a great guy and very caring about his students.

Best possible prof for 217. Very lenient with everything. My roommate had ijaz and never failed to mention how jealous he was that I had cornejo. Do prepare for the final. It dropped my grade nearly 10 points, however that is my own fault. It's easy to slack off in this class due to how easy cornejo makes it, but seriously beware of the final.

This is the most caring and attentive professor I've ever had! He offered extra credit on homework questions students were having problems with and always listened to the students with regards to deadlines, even when he was going through so many personal things during the semester. The final is exactly like the hw so make sure you know how to do hw

Hands down the best professor for 217. Dr.Cornejo is such a kind and caring person and is always willing to work with you. The HW is pretty easy as you're provided with the answer key and allowed to work with a partner. The final was easy and similar to the HW. Overall the class is very easy, especially if you're taking PHYS 207 alongside it.

Cornejo is kind of a hit-or-miss when trying to reach him outside of class. He cares deeply for his students but he has major health issues and ended up canceling a lot of office hours and some lectures, the material is easy you can teach yourself a majority of the material in about a week. Ended up curving my test 15 points for working with him

Nice reinforcement of PHYS 207, easy homework and lots of extra credit

Cornejo makes the class incredibly easy, he does not give busy work and gives very easy assignments. Cornejo also creates his own final exam which was super easy. Best 217 prof. Frequently cancelled class due to health issues, so I did not attend many lectures, just labs.

He is really nice, the homework is relatively easy, and he does not add stress to your life. Take him.

Professor Cornejo was easily the best option for 217. He is very friendly and cares about his students. The homework was fairly easy and similar to the final. The final was the most difficult aspect but if you practice the homework questions then you should get an A in Cornejo's class.

An overall great professor who truly cares about his students. Will take extra time to go over problems in depth. Sometimes difficult to get in contact with.

Cornejo is super cool and really understanding. He has a built in grace period for most assignments and puts up a lot of resources online. There isn't a lot of homework and he will make accommodations due to extenuating circumstances without inconveniencing the entire class and he is super chill. If you are taking 217 try and take him.

He makes this class as easy as it can be, his only issue was assigning 2 homework's due finals week. However the content is not hard at all, all you have to do is show up to lab and do the homework and you'll be fine.

Dr. Cornejo taught about silicon ingots and the process of converting ingots into dies. He also explained how the die was used in final processors, and how errors in fabrication can impact multiple died in the final product.

Dr. Cornjeo cares a lot about his students. Will work with you if you are struggling you just need to talk to him. Conversations do take some time, homework is fairly straightforward, and lectures are slower paced but match his homework. Lots of provided practice problems. He is slower to respond and get deadlines out. He is the best!

Very accommodating and very clearly and easily lays out stuff to help us succeed in the class, which is basically 207 if it was easy. Despite having most lectures canceled, still cared for his students and posted appropriate material. Final was easy. His expectations are very clear and extra credit pops up occasionally. Be ready to seek it though.

This class is super easy if you are taking phys 207 at the same time. He canceled a lot of classes because of his health, however, he posts all the material needed. The labs take forever though, including one that took the whole 3 hours, and my lab section didn't have a PT for half the year. He gives extra credit for going to "professional events."

I took Dr. Cornejo for 217 whilst taking PHYS 207 which helped me understand the topics learned. Class is mostly busy work and final is like the homework's given throughout the semester. Make sure to do the extra credit and stay on top of the topics and an A will be achievable. Possibly has the easiest final in comparison to other profs.

Awesome professor and super laid back. He usually either cancels lectures or puts them on Zoom. He will sometimes give out attendance quizzes that go into your grade so try to attend as many lectures as possible. He rarely gives out homework and it's super easy. He gives out a lot of practice problems for the final and they prepare you for them.

isnt very accessible and his health isn't the best so can cancel lectures but he makes up for it. Final only contained stuff from lectures he didn't have to cancel, was VERY similar to homeworks. for final he posted ton of material to study and videos for concepts to make sense. may do attendance quiz so show up and is thorough in notes which help

Solid professor who cares about students. Office hours were cancelled often and there were just a few cancelled/remote lectures. He gives multiple easy extra credit opportunities . Final had problems that were similar to homework questions. Attendance was taken a few times throughout semester via in person and online checks.

Fantastic guy, so glad I am taking him now. Lectures are the best and he explains the crap out of everything and no question feels like a dumb one. Opportunities to learn are everywhere and it's great so far. Caring guy and inspires learning in physics materials.

Cornejo is a great guy. This class is much more organized than 216, however it always feels like we are crunched for time as prof Cornejo will spend the entire period on 1 question sometimes. Class got cancelled pretty often.

Prof. Cornejo is a legend. Class was cancelled a couple of times but when there are lectures, he explains things very well. I struggled in 207 when I took it but taking 217 with Cornejo really helped me understand everything. 5-star professor, would take again.

Overall, great professor. He takes his time going through questions and mentions how the final will be similar to the questions he does in class. Homework is doable and if you have any questions go to his office hours. He helps you understand what the material is about and prepares you for the exam. Would take his class again!

Dr. Cornejo was great, in most 217 classes there's no access to final exams yet he gave us multiple to study for the class. He also takes attendance in his lectures but they're entirely extra credit and at the end of the semester he gave. Really caring and understanding professor will also grade late work. Just make sure to prepare for the final.

One of, if not the best engineering professors I've had here. Extremely caring, reasonable, and willing to work through with students on practically any situation. Classwork was a breeze, and the final was reasonably difficult. Take this professor if you can - difference between him and others is night and day.

This class was insanely free. Dr. Cornejo is a great lecturer and provides his old final exams to help prepare. There weren't many homework assignments, and when there were, they were around 4-7 questions, with the first 2 generally being incredibly easy. I highly recommend taking him if possible. Very nice guy too.

Such an awesome guy, very good teacher. He understands that a lot of students are in rather challenging classes, and doesn't go out of his way to make his class hard. Great at explaining the concepts. He has a lot of health issues unfortunately, so class does get cancelled at times. I hope his health gets better as he's a gift to Texas A&M.

One of, if not, the most caring professors to be found. Lectures can border on painfully slow, but only because it's at a pace impossible to miss anything

He is genuinely the best prof I have had here at A&M. He understands the rigor of our other courses and takes that into account in terms or the amount of work we do i the class which is very little!

He slays boots. He is so kind and so understanding. Very doable homework. Good lectures. I love this man. He is so amazing. If you can, take him over anyone else.

Dr. Cornejo is incredibly caring, often offering curves and extensions on assignments when needed. He goes slow and writes extensively during class, which some find annoying, but it proves invaluable when revisiting problems during finals. His teaching approach makes achieving an A in this class much more attainable compared to other professors.

Cornejo is probably the most caring professor I've had at A&M. He understands the rigor of engineering and goes out of his way to alleviate as much pressure as possible. He even adjusted homework due dates throughout the semester after learning about his students' exam schedules. Compared to other professors, his approach makes the 217 much easier.

Probably my favorite professor I have had to take here. Cornejo is a great guy that really cares for his students and their well-being. Never seen him in a bad mood. His lectures are very methodical and informative. Short homeworks and good study materials for the final, he is very accessible outside of class. LOVE THIS GUY HES AWESOME.

BEYOND INCREDIBLE. This man, is THE man. I am not a physics person but he made it so understandable and I felt so safe and welcomed to ask questions. I have never met a professor who cared so much about his students. If you can somehow get in his class, you will be set. I never felt one ounce of stress in his class, ever. Best prof by a long shot.

Very little homework and he's extremely lenient about deadlines, lectures are very in depth into very simple plug in type problems. I would recommend for 217 as he makes the class as easy as it should be.

He's a really nice guy and a good teacher. Compared to the other horror stories I've heard about this class, this is the guy to take.

This guy is awesome. Most caring professor I have ever had and will do whatever it takes to help you succeed. Total of like 6 HW assignments the whole semester which had super loose deadlines. The final was very similar to the review. The lab portion may screw you over and depends heavily on how leniently your PT grades (mine sucked).

I read the reviews before taking his class, and almost everybody said that he was an amazing person, but I didn't believe it until I took his class. Very nice person and a great professor. He is always available for any help. His final looks like the homework and previous exams that he gives. Easy A!!

Cornejo is an extremely caring professor, far so than most. He does go out of his way to make sure you understand the content, but I feel that he didn't do the best job to really explain the material, as he was kinda all over the place. He also takes forever to respond to emails, on average 2 weeks after I sent them.

Like 5 actual hws (4-6 questions each), each took me around an hour, he posts the keys, so it's a guaranteed 100. quizzes are 1-2 questions that he went over in lecture. No exams, just one final, which is very similar to the practice and has 20 points of extra credit. He gave us extensions on every assignment and very understanding overall

Cornejo made the class straightforward and simple while also caring about the students. If you put in the effort, an A is well-within reach.

Dr. Cornejo is a very caring prof and his class is very easy. There were about 5 homework the whole year and he posted a canvas quiz where you could check your answers, so they were all free 100's. He gives extensions on every assignment and is very understanding. His final was very similar to his practice exam and had 20 points of extra credit.

Cornejo is so awesome. One of the kindest professors I've ever had. Personally, wasn't a fan of his lecture style, so I didn't go to class too often, though he does have unannounced attendance checks. He makes the class as easy as it can be, and he's a really, really nice guy. I can't stress that enough.

This man is a saint. I took high school credit for 207 so I don't remember anything related to 217, but he went through examples thoroughly and gave practice exams that looked a lot like the final. I ended up with an A when I was fully expecting a B cause I didn't put that much work into the class. GOAT

Dr. Cornejo is a very good professor with no problems and is very solid. The only issue that I had was that he wasn't the most responsive to emails, but that was it. Otherwise, he was very caring and understanding towards his students and offered lots of extra credit. He is a very good teacher to take and I highly recommend him to other students.

The BEST phys/engr 217 prof you could take, he is genuinely the best. He is caring, understanding, and an amazing teacher. If you have the opportunity to take him, do it!

Such a kind person. One of the few profs who seems to remember how stressful it is to be an engineering undergrad. Lectures are clear and class was only canceled a couple times (I was worried it'd be more based on some of the other reviews). Even ignoring all that, look up Ijaz, Richard, and Lara-Ruiz to see why you want Cornejo for 217.

He was a great professor that explained topics very slowly and thoroughly and made grading and homework super relaxed, but I didn't learn much in the class because of that. As long as you learn the topics somewhat in PHYS 207, you'll be fine.

If you're in 207, the class w this prof is ridiculously easy. The labs are relatively straightforward, 6 of them worth 50%. Homework is very easy, make sure to study for the final though. I didn't go to lecture a single time this semester and ended with an A.

Cornejo is by far the best option for 217. He's a super nice person and truly cares about what students may be going through, doing things like extending a homework assignment because of midterm season for other courses. Most importantly: he remembers who attends lectures, and values mutual respect above all else, going to class is key for him.

Cornejo is the GOAT. If you go to lectures, the exam is easy, and the homework is too. His exam is very easy and is a copy and paste of homework and past exams, and he gives you extra credit, 25 points. 10 was his name as a question. He even helps you if you get confused. TAKE CORNEJO and get an A. He also remembers you if you show up to class.

Cornejo the GOAT

Great Professor with interesting lectures. Homework quizzes are very simple and prepare you well for the final. He is very caring and passionate about teaching and will try his best to accommodate everywhere throughout the semester.

He could be a top tier professor, however he cancels frequently, never responds to emails, and is forgetful. Still, the good far outweighs the bad with Juan. He teaches very well, and offers extra credit. He makes it a policy to not make the class miserable like Ijaz and Richard do in their 217 classes. Final exam is exact copy of old exams.

He's just genuinely an awesome guy. He makes it clear what is expected from you on day one and if you just keep up with lecture material its practically a guaranteed A. If you're struggling in the class just go talk to him and see if you can work something out and go to his office hours. Easily one of the nicest profs I've ever had.

Great prof! Caring outside of class and has a good lecture system. Sometimes he does cancel class, but overall, if you cover the material you'll get an A. Practice final exam material is also similar to his actual final so go over that thoroughly.

Amazing person, helpful in everyway, and all around great guy.

A very great teacher, who wants his students to learn and succeed, makes everything understandable and easy, and truly cares for his students

Best Professor I've had at TAMU. He's really caring and is a great lecturer!

Easiest class ever, pretty much an online class since attendance is never required. Dr. Cornejo is a good lecturer and very kind but he goes incredibly slow and seems to appeal to the students that have forgetten phys 207. Homework is based off of the easiest concepts from 207 and is very short and spaced out across the semester.

God protect this man.

Reviews for fall '25 semester should not be considered; he has been dealing with personal matters this semester and omitted significant material/hw due to missing ~50% of lectures. Doesn't matter bc 217 is a filler course, and I say this as an EE... Despite this it is clear he is approachable, caring, and a good teacher. Material is formatted well.

It's obvious he cares a lot about how his students are doing and he does everything he can to make it as easy as possible. One of the sweetest professors I've ever had. He works through every step of a problem so it's hard to not understand if you go to lecture.

One of the best profs I've had at A&M. You can tell he really wants you to succeed, and everyone agrees that he is the best teacher for PHYS 217 when I had him.

Just took his final. This mf is deadass the goat, if you even put an ounce of effort you will get an A in the class. Basically gives a free 30 points on the exam, and one of the problems is what is his name. Super chill guy too, take him at ALL COSTS.

Great prof, easy class, I can see why people get frustrated bc of cancelling lectures, but let's be serious, no ones mad about that.

Though he has a lot of health problems and has spotty attendance, but he does his best to show up for his students and gives everyone every opportunity to get an A. Hosts extra sessions outside of class on his own time and the reviews are a copy of the final with a lot extra credit opportunities on the final and in class.

Dr. Cornejo had a lot of health problems this semester which caused him to cancel class frequently. Although the class experience was not the greatest, he made it up to us. I wish him and his mother the best. Take him if you can, the other low ratings do not matter as much.

Yeah, he probably cancelled over half the lectures, but in return gave barely any homework and a really easy final, he was very understanding through it all. Bad reviews are probably people who missed 1 homework and it impacted their grade significantly, so just lock in to avoid that issue. I wish the best for him and his mother.

Cornejo is CorneGOAT

There aren't many good professors for 217. It's a class that a lot of them don't want to teach, and it also happens to be difficult for no good reason. While Dr. Cornejo had some (very reasonable) difficulties this semester, he put effort into making this class not a miserable experience for his students. Absolutely take him if you can.

To be blunt, PHYS217 is a bit of a disaster itself. Why does TAMU make us take two physics lectures over the same topic? The world may never know. But I will tell you this. If you don't get Cornejo, take it another semester. He won't respond to emails and homework isn't graded until after finals start, but it will be the easiest A+ you'll ever get.

He was out for most of the semester due to circumstances (which were valid). However, the few times there was a lecture, he explained the concept very well and provided resources to help. Hw in this class was pretty straightforward, and the final was very similar to the resources provided. You definitely want to take this class for the easy A+

Ignore the low ratings honestly, it felt like people were just catching him during a rough semester. The class is extremely straightforward and low-stress. If you put in even 40 minutes of solid prep for the final, you're set. Everything else is easy to manage. Dr. Cornejo is a great guy and a genuinely kind soul. Highly recommend

217 is a futile class, so Cornejo is the perfect fit. He barely assigns any homework and you don't have to study too hard for the final unlike other profs. He did say that he'd make it harder due to a scandal that happened. I didn't go to lecture and still did fine. Barely any work/learning and no headache for a pointless class is a great deal.

Really nice person, actively cares about his students. Class is easy. Unfortunately this year he and his mother have been battling health issues.

Genuinely kind person. Over half of the time, he was out because of the health issues he and his mother are facing. We had an easy final but because some students wanted to take advantage of him, he will be making the finals harder from now on and not allow people to make their own cheat sheets.

Very easy class if you are taking 207 along side it, almost all material is directly from there. Not to mention extra credit is very common. One downside is he misses classes consistently with some what short notice.

It's hard to give an accurate rating based on his circumstances this semester, but what I could tell is that he cares about his students and provides so many resources for us to use. You could tell that he really didn't like missing class when he had to. I hope that he and his mom are able to get in better health.

I would say this was an off semester for him; he and his mother were suffering from some health issues this semester, which made communication hard. If you are a caring student, you'll understand his circumstances. Tons of extra credit, which helped me get an A as I took Physics II over the summer and had NO knowledge about the concepts at all.