3.0

Mark Biscoe

Chemistry - City College of New York

3.0
Quality
4.2
Difficulty
58%
Would Retake
84
Reviews
3.0
Quality
4.2
Difficulty
2.9
Helpful
3.0
Clarity

58%

Would Retake

84

Reviews

Rating Distribution
Official

5

28

4

12

3

6

2

14

1

24

What Students Say

Gives good notes but he is weird

CHEM263 - 1.0 rating

Difficulty level is hard

ORGO2 - 2.0 rating
Class Info

Attendance Mandatory

39%

Textbook Required

37%

Grade Predictor

Your expected effort level

LowHigh

Predicted Grade

A-

95% confidence
Based on 24 grades
Most common grades:
A (8)
A+ (4)
A- (4)
Grade Distribution
A(12)B(3)C(2)D(2)F(0)A-/B+(7)
Based on 32 reported grades
A: 8
A+: 4
A-: 4
Not sure yet: 3
Common Tags
Tough grader (9)
Graded by few things (9)
Test heavy (7)
Amazing lectures (5)
Skip class? You won't pass. (5)
Lecture heavy (5)
ACCESSIBLE OUTSIDE CLASS (4)
Respected (4)
Rating Trend

Declining

-0.85 avg change
Jun
Aug
Dec
Jan
Feb
Dec
Last 6 months
Ratings by Course

ORGO261

5.0

(1)

CHEMLM

5.0

(1)

ORGO263

4.4

(5)

ORG263

4.0

(1)

ORGO1

4.0

(1)
+4 more courses
Difficulty by Course

ORGOORGO

5.0

ORG263

5.0

ORGO2

4.6

ORGO263

4.0

ORGO261

4.0

Reviews (84)
1.0
5.0
ORGOORGO
Jul 6, 2009

if you want to clearly understand the material stay away from his class....his exams are extremely difficult and he doesnt do a good job at explaining things.....while he gives a curve his curves are terrible....he doesnt care much for his students and doesnt give students extra chances at doing well....he doesnt even consider hw or participation

4.0
3.0
CHEM263
Sep 24, 2009

I thought that he was a great professor. His approach to teaching is effective, he goes over all the problems in his exam during class. I recommend his highly if he teaches organic again. You will learn something and in a crystal clear way. But don't forget to study, after all it is still organic chemistry :)

3.0
5.0
CHEM263
Mar 3, 2010

His name is Biscoe, not Briscoe. His first test was outrageously difficult and then he had the gall to tell students that if they had just done the homework problems that they would have done better. This is after he admits that 2 questions worth 25 points total were not in the book or explained in class. He seems out of touch with his students.

4.0
3.0
CHEM263
May 7, 2010

If you took orgo I w/ Balog-Nair or John and did well, you have nothing to worry about. Keep studying the same way. He is pretty good, clear and approachable. Gives extra points on every exam depending on average. I say one of the best professors from Chem dept.

4.0
4.0
CHEM263
May 26, 2010

Tough course; helpful prof.

3.0
5.0
CHEM263
Jun 1, 2010

Biscoe's teaching style is confusing. It's not that he doesn't try, it's that he has a weird way of explaining things. Some days he spent the entire class writing out a single reaction mechanism, and then did not include it on the test. On the upside, he grades on a curve and drops your lowest test score.

3.0
3.0
ORGO263
Jun 23, 2010

He is very passionate about teaching and his notes are very precise. This class is strainuous but he helps out and makes it easier. Take him if you get a chance.

5.0
2.0
CHEM263
Sep 23, 2011

Very good professor. Lots of examples and he is very passionate about helping his students learn the course. He in my opinion is the best chemistry professor in the college. Highly recommended.

5.0
3.0
CHEM263
Nov 26, 2011

His exam questions are straight from the homework assignments, class notes, and past exams. Very straightforward and fair. Study & understand all the above, and you will get a good grade. Exam questions are NOT tricky or complicated...

5.0
4.0
CHEM263
Dec 18, 2011

Fantastic Professor! He loves what he teaches, and he definitely knows what he's teaching. He isn't the easiest professor, but this isn't an easy class. So that's fine. No homework, and his exams are straight forward. He even explains each question before the exam just to make sure.

5.0
3.0
CHEM263
Dec 27, 2011

Gives past exams with almost the exact problem for your exam.Works with you to pass and understand.has mechanism and synthesis on exam. Has this 30pt q w/ diff reactions that u must draw the result and the majority can only be memorized. Would've thought after so many fail that section, he would remove, guess not. Very helpful n i recommend.Gluck

4.0
5.0
ORG263
May 29, 2012

Good professor. You must work hard in his class and do all of the hw to do well. This is key! Keep up with the work or you'll fall flatly behind on everything. He's a decent professor. Sometimes his organization of the material seems incoherent, but just do your thing and study as much as you can.

5.0
3.0
CHEM263
Jun 26, 2012

Very nice and approachable. Willing to go over any problems that he assigns if you have questions. He digresses & gives more info than needed a lot but he'll tell you what he expects of you. DEFINITELY do problems he assigns!

5.0
2.0
CHEM263
Oct 10, 2012

He is VERY clear unlike other organic chem professors. Sometimes he might go off in tangents & provide more information than you need, but he'll let you know that it won't be tested on. He's very helpful during OHs & makes sure that you understand, so it's not like he's trying to get rid of you during OHs. Would love another class with him!

4.0
3.0
ORGO1
Dec 21, 2012

Teaching style is ok (no slides, writes amd projects notes in class), but he doesnt do a lot of examples in class.Gives one sample exam to study from per exam and exams are mainly based on them amd his notes! Take notes in class, he organizes the info very well. Orgo is hard regardless, so if u study and practice and practice u'll do fine.

5.0
5.0
CHEM261
Dec 25, 2012

I am writing this review BEFORE I receive my grade, so that my review will not subjective this professor isreally good. He curves fairly if he feels the need to. He allows enough time for students to copy notes, makes clear what he expects, and teaches so passionately that you can feel it. He gets so excited at times when explaining certain concept

5.0
4.0
ORGO261
Jan 2, 2013

AMAZING professor. Very thorough, super clear, and most importantly HE TEACHES. I highly recommend taking him if you want a fair grade. You will have to work hard and study but he provides you with everything you need to know in his notes. GO TO LECTURE. I am not a brilliantly smart person, but I managed to get an A in his class. So, there is hope

5.0
3.0
CHEMLM
Jan 4, 2013

awesome professor, he is really Great and very knowledgeable.

5.0
4.0
ORGO2
May 23, 2014

He is a very smart professor. He is a little tough but at the end of the semester you will really know chemistry

4.0
5.0
ORGO2
Grade: Not sure yet
Dec 9, 2015

This man can teach, but his tests are out of this world!! its mostly theory ( its all about p-orbitals) His exams are loosely based off of his practice ones. His review sessions are just a Q and A session the class before the exam. Some things he says wont be on the exams end up being on the exams...

2.0
5.0
ORGO2
Jan 6, 2016

One of the hardest test makers in school. How are his tests so hard? He explains concepts in class but doesn't go over proper test related examples. Never does hw questions in class except reviews. If you want to fully understand and get a good grade AVOID AT ALL COST!!

1.0
5.0
ORGO2
Jan 7, 2016

He is good but bad tests. Class average is a C.

2.0
5.0
ORGO2
Grade: C
Jan 13, 2016

Lectures were long but he tries to explain. Sometimes a little too much where he goes off topic.

1.0
5.0
ORGO2
Feb 26, 2016

One of the worst. Do yourself a favor and don't take. He makes his own version of an exam. Exams are 10 times harder than what he teaches in class. Really bad professor.

2.0
5.0
ORGO2
Feb 27, 2016

His grading criteria is not clear. Horrible review sessions where students randomly ask whatever question from the book they want and most of the time he doesn't explain. Hard to find during office hours because he is in some building that is difficult to go to.

2.0
5.0
ORGO2
Feb 28, 2016

I don't think he cares about students. He tries to promote his soda company in the beginning of class instead of teaching. I would never take again. The classes are extremely boring because he goes in depth about unimportant things. For example, talking about his colleagues work that isn't relevant for the course.

2.0
5.0
ORGO2
Mar 3, 2016

You should definitely do the home work problems. The professor tries to teach. I wouldn't say the best but not the worst either. Reviews are useless. Class notes are somewhat helpful. His tests are 10 times harder than what he teaches in class. Expect tricky questions. He curves but not like it helps.

1.0
5.0
ORGO2
Mar 8, 2016

Lectures ridiculously long. He lets people out early when he knows there's a Mets game on. Study your notes and you'll be fine. He makes the class harder than it should be. If he tells you not to explain anything in the test where it says explain don't listen because he's going to take points off later.

1.0
5.0
ORGO2
Mar 16, 2016

Picks hardest question off hw so try to get the solution manual.

1.0
5.0
ORGO2
Mar 26, 2016

He tries to make the class think they are doing well and then doesn't curve on the final even though the average is basically a C

2.0
5.0
ORGO2
Mar 28, 2016

Studying alone isn't enough for this class. You need to breathe orgo to do well. His questions are extremely tricky. He fails to make proper questions for a passing average grade. My suggestions are to STAY AWAY from this class unless you are die hard chem student.

5.0
2.0
ORGO2
Grade: A
Apr 12, 2016

Biscoe is the greatest prof. ever. He's very passionate when he teaches. His exams can be sort of tough, but doable. A lot students complain about him, but then again these are the students that complain about every professor and don't even like chem.

2.0
5.0
ORGO2
Grade: B-
Apr 14, 2016

Hes alright but need more effort than other classes. If you take him you better get ready to sell your soul to organic chemistry. Watch out for tricky questions because he loves putting those on tests.

1.0
5.0
ORGO2
Grade: C-
Apr 14, 2016

Definitely should go over home work. I struggled in this class because of the way he teaches. One advice would be to put lectures up online so attendance is actually mandatory to pass.

5.0
3.0
ORGO263
Apr 15, 2016

He is a very good lecturer. He writes everything unlike Prof. Volaignair who just reads it off the slides. Tests are only related to what he taught. Look in your notes and understand what he taught. He also posts previous exams which sometimes are exactly similar or requires similar idea. Practice them and the class tests would be fine. Good luck!

2.0
5.0
ORGO2
Apr 16, 2016

Difficulty level is hard. He says text books have mistakes because he knows the author. The only good thing is he attempts to teach by writing. However, he does not seem like he cares about what we learn in class because sometimes he lets a 2 hour class leave 40 mins early if there is a Mets game on that night.

2.0
5.0
ORGO2
Apr 17, 2016

Curves tests by few points but not final. Test averages are in the 40s.

1.0
5.0
ORGO2
Apr 18, 2016

Got a B in the class by studying more than what this is worth. Orgos hard but this was intense. A lot of conceptual questions expected. My advice skip this if you want to boost your average. Take it if you can handle hardcore organics.

1.0
5.0
ORGO2
Apr 19, 2016

Long lectures. He writes everything in class to help people understand. Only bad thing is tests are really tricky.

2.0
5.0
ORGO2
Apr 21, 2016

Help is hard to get from this man because his office is in the new research building that doesnt let me in.

1.0
5.0
ORGO2
Apr 28, 2016

Not the best professor here. You need to self study to do well. Come to class and study notes as well.

2.0
3.0
ORGO2
May 1, 2016

I had to study on my own a lot. Biscoe's a funny man but extremely off topic at times.

5.0
5.0
CHEM263
May 10, 2016

I have never learned so much in one semester and he is by far the best professor ever very fare and can always explain very well so you understand and can apply the concepts not like other proff who make you memorize random stuff, here you will study harder than you ever have but it is worth it! my best class ever! made me love orgo!

3.0
4.0
ORGO2
May 22, 2016

Hes ok i guess. Didnt love the class but i passed with some effort

2.0
4.0
ORGO2
May 23, 2016

Bad professor. Hard exams. Offtopic lectures. He needs to stop teaching.

5.0
2.0
CHEM263
Grade: A
May 24, 2016

Prof. Biscoe is the man. He is really smart and knows how to teach. I learned a lot from him. Lectures are long. He really cares about whether the students are learning or not. Chemistry major should love him because he helps you rationalize the world of organic chemistry. Exams are hard. But the organic reactions become intuition to me LOVE THOSE.

4.0
3.0
CHEM263
Grade: A
May 24, 2016

It is not one of those class that you can pass if you study the last minute before exams. He knows how to teach. He makes sure the students understand the materials. Sometimes it is hard to catch up during the lectures because they are long. Take him if you want to ACTUALLY LEARN organic chemistry!!!!!

5.0
5.0
ORGO263
Grade: Not sure yet
May 25, 2016

He is tough, absolutely but honestly it is ORGANIC CHEMISTRY what do you people expect? He response to question through email pretty quick, curves, and partial credit. He tells you what you need to know, give past exams, for you to practice and textbook question. go to class, practice questions, and ask questions and you will pass and love it ;D

2.0
5.0
ORGO2
May 30, 2016
Wouldn't take again

Very hard tests and sarcastic personality. Likes to intimidate students

1.0
5.0
ORGO2
May 30, 2016
Wouldn't take again

This professor gives good notes but he doesn't care about students. Skip him if you are looking for good grades as a full time student.

1.0
5.0
ORGO2
May 30, 2016
Wouldn't take again

I had him as a professor and then moved on to work with him as a research student. Personality wise he is nice but very strict when it comes to grading and questions. He loves to trick you on tests so beware.

3.0
4.0
CHEM263
Grade: B
Jun 1, 2016
Would take again

Professor Biscoe can be tough, most of his old exams are similar to each other but have changes that can make a big difference. The best way to do well is to go over the concepts, do all the HW problems, and then do the old exams. Use your time wisely and effectively when studying. His class can be a real challenge but it is manageable.

4.0
5.0
ORGO263
Grade: B+
Jun 20, 2016
Would take again

Orgo is never easy. He has a nice personality. Adds some extra points if the average is low which is life saving. NO multiple choice. You either know or you don't. He doesn't repeat old exams (maybe 1 or 2 max). Know the mechanisms in your notes inside-out. A lot of the questions come from it but in a different format. His tests are mind-boggling!!

5.0
4.0
ORGO263
Grade: A+
Jun 21, 2016
Would take again

Dr. Biscoe is THE BEST professor at this school. You have to go to class and take good notes. He goes over everything he wants you to know thoroughly. He is a super nice person and very smart. His exams are difficult but this is Orgo 2! Deal with it. Do the homework, do his old exams which he provides. He gives extra points and is FAIR. He ROCKS!!!

5.0
5.0
CHEM263
Grade: A
Jun 23, 2016
Would take again

Dr. Biscoe is one the best professors you will have. He is perfect! Super nice guy, crazy smart, fair exams and excellent lecturer. People complain about his exams and they can be tricky but you have to study. No one ever said Orgo 2 is an easy class. You will really learn Orgo from him. I fell in love with the subject matter only because of Dr. B.

1.0
5.0
CHEM263
Jul 1, 2016
Wouldn't take again

Gives good notes but he is weird. This one time in class he yelled out "DIET COKE!" while we were taking a test. I have never met a professor more eccentric than bisco.

4.0
4.0
ORGO2
Jul 10, 2016
Would take again

Go by this note, do the previous exams over and over again and you will be fine!!! He's a very nice professor. Don't be scared to ask questions. His exams are fair I have to say. But you must study for this class otherwise you will fail as his questions are usually worth a lot of points.

1.0
5.0
ORGO2
Sep 25, 2016
Wouldn't take again

Hated this class. I had to work twice as hard as other org chem students taking class with someone else. Did not learn much.

Tough Grader
5.0
3.0
ORGO2
Nov 8, 2016
Would take again

Orgo is a tough class for most people. Dr. Biscoe knows his stuff. You'll learn some organic chemistry if you take his class.

1.0
5.0
ORGO2
Dec 19, 2016
Wouldn't take again

He needs to stop teaching. Hated this class. Tests are harder than cw.

Tough Grader
5.0
4.0
ORGO2
Grade: A-
Aug 7, 2017
Would take again

He needs to teach Org 2!

5.0
4.0
CHEM263
Apr 24, 2018
Would take again

He is amazing! One of the best chemistry professors. Really cares about students. His exams are very similar to practice exams he gives. If you go to his office hours, he will help you until you understand the concept!

ACCESSIBLE OUTSIDE CLASS
Clear grading criteria
Amazing lectures
5.0
4.0
CHEM263
Grade: A
May 17, 2018
Would take again

Amazing professor, arguably one of the best. He takes time to really teach you the basics of orgo that will make sense throughout the entire course. Take good notes and review his notes afterward. He posts numerous past exams to practice, has review sessions, and takes problems from the homework on his exam. Take him, and you'll really learn.

Skip class? You won't pass.
LOTS OF HOMEWORK
Amazing lectures
5.0
3.0
CHEM263
Grade: A
May 21, 2018
Would take again

Enjoyable course. You have to work hard obviously, but his lectures are extremely helpful and thorough.

Gives good feedback
Skip class? You won't pass.
Amazing lectures
5.0
3.0
CHEM263
Grade: A+
May 28, 2018
Would take again

The best chemistry professor ever! No surprises on exams. Exam problems come from HWs and variations of past exam questions(which he provides to aid studying). Lectures are crystal clear. He doesnt assume we are all geniuses and goes slow with the material. I learned so much in this course. I would recommend to everyone.

Respected
Skip class? You won't pass.
ACCESSIBLE OUTSIDE CLASS
5.0
5.0
CHEM263
Grade: A+
May 29, 2018
Would take again

The best chem prof in ccny. His lectures were amazing & wrote his own notes. Definitely read ahead of class and pay attention cause he makes orgo fun and orgo 2 better than orgo1. Do the practice probs, past exams and ask qs. His grading is very fair and HE REALLY CARES ABOUT HIS STUDENTS. He is a sweetheart and the nicest prof ever who can teach.

Respected
Skip class? You won't pass.
Amazing lectures
5.0
3.0
CHEM263
Grade: A
May 29, 2018
Would take again

Appreciate his lectures very much. Always ready for help after class and in office hours. Exam questions are very fair (mechanism questions might be a little bit tricky sometimes). He is definitely the best chemistry professor in CCNY. I really hope I could take him for all my chemistry courses.

Respected
Inspirational
Caring
4.0
5.0
CHEM263
Grade: B
May 29, 2018
Would take again

He is a great and nice prof who gives very good notes. He makes you understand organic chemistry instead of memorizing. He drops 1 of the 3 lecture exams with the final, each counts 1/3 of your grade. His exams are hard, but he curves the exam average to 73 or 75 for every exam. He assigns a lot of HW, it is better if you have the solution manual.

Skip class? You won't pass.
ACCESSIBLE OUTSIDE CLASS
TEST HEAVY
4.0
3.0
CHEM263
Grade: B+
Jun 29, 2018
Would take again

He is really nice and his lectures are clear. Just do the practice problems and review his old exams (which he posts on blackboard). He is available before and after lecture. From experience, if you have to choose btw Boson and Biscoe I would choose Biscoe because his exams are better and you will have a good chance of doing well.

Gives good feedback
ACCESSIBLE OUTSIDE CLASS
Clear grading criteria
1.0
5.0
ORGO2
Dec 2, 2021
Wouldn't take again

Man always babbles about his famous book writing colleagues. I'm here to learn not listen to unrelated stories about your life. And why are the tests so much harder than the lecture like you're on a mission to bring people's average down.

Lecture heavy
Tough grader
5.0
4.0
CHEM263
Grade: A+
Dec 28, 2021
Would take again

A must take professor. He teaches concepts very well, maybe he wont spend enough time doing problems with you as he expects you to do them on your own and show up to office hours for questions. He will give you the understanding you need to do well on his course. PLEASE do the TEXTBOOK problems and and his posted exams if you want to do well.

Respected
Accessible outside class
Amazing lectures
2.0
5.0
CHEM263
Dec 28, 2021
Would take again

It felt very confusing at times during lecture due to off topic tangents, there was a lack of structure in the lectures. The lectures would also improve through utilizing more practice questions since the lectures were too theoretical. On some topics he was very succesful at conveying the main concepts such as explaining sterochemistry.

Lots of homework
Graded by few things
Test heavy
1.0
5.0
CHEM263
Grade: Rather not say
Feb 7, 2022
Wouldn't take again

He has deleted most of my ratings because he doesn't want other students to know how horrible of a professor he is. Classes have no structure and exams are extremely difficult. Apparently, everyone taking this class must have superhuman memory. Please check with your doctor before taking this class. Worst professor ever. Good luck to you all.

Test heavy
Lecture heavy
Tough grader
1.0
5.0
CHEM263
Grade: Not sure yet
May 17, 2022

I highly regret taking this professor. He has 4 exams --he drops the lowest-- which is your entire grade and he grades them so harshly. His lectures have nothing to do with his exams and more than half of his class are always failing.

Tough grader
Test heavy
Graded by few things
1.0
5.0
CHEM263
Grade: Rather not say
May 24, 2022

One of the worst professors I have ever taken. His lectures have nothing to do with the exams and more than half the students withdrew after the second exam because they were failing horribly. The class averages never went over 60.

Tough grader
Test heavy
Graded by few things
3.0
5.0
CHEM263
Grade: A-
May 28, 2022
Would take again

Very knowledgeable of the material but can sometimes ramble for too long during lectures. If you do all of the assigned textbook problems and look over his past exams, you should be prepared for his exams which he still ends up curving by at least 8 points. If you do really well on the final, he can weigh it more heavily to help boost your grade.

Lots of homework
Lecture heavy
Graded by few things
1.0
5.0
CHEM263
Grade: Drop/Withdrawal
Jun 1, 2022

His lectures had little to no resemblance to the exams he gave us. His highest curve was 8 points added to the exam- even though the class averages were always 40-50%. That means more than half the class was always failing the exams and that is an issue because exams are the ONLY thing making up your overall grade.

Tough grader
Test heavy
Graded by few things
1.0
5.0
CHEM263
Grade: Drop/Withdrawal
Aug 3, 2022

So sorry to anyone who has no choice but to take him for their major. You cannot focus on any course other than this. Even then, you're lucky if you get a C+

Tough grader
Test heavy
Graded by few things
1.0
5.0
CHEM263
Grade: A-
Dec 29, 2024

Save yourself the time and energy and take it with another professor. Tests are insanely difficult and you have to commit everything to the class or you won't get the grade you want. He reads off the textbook so you can teach yourself.

Tough grader
Lecture heavy
Graded by few things
1.0
5.0
CHEM263
Grade: B+
Jan 26, 2025

Good person. Horrible professor. He teaches the way he learned which is probably decades ago so it doesn't apply to now.

Tough grader
Test heavy
Graded by few things
5.0
3.0
CHEM263
Grade: A
Feb 5, 2025
Would take again

super cool prof. great at explaining concepts and has the patience of a saint when it comes to clarifying topics. just read ahead, do the practice tests and assigned hw set. he picks mechanism questions straightout of the textbook, so I don't know why people act all surprised when it shows up on the exam. put in the effort and you'll learn a lot.

Amazing lectures
Caring
1.0
1.0
CHEM261
Dec 15, 2025

Sorry if you ended up in his class, my condolences.

Tough grader
4.0
3.0
CHEM263
Grade: Rather not say
Dec 23, 2025
Would take again

be organized, do all the hw and ask questions! he likes students that participate

Lecture heavy
Graded by few things
Accessible outside class
5.0
3.0
CHEM263
Grade: A-
Dec 26, 2025
Would take again

Prof. Biscoe is by far one of the BEST at ccny. I took Orgo 2 before with other professor and did very bad, but with him I finally understood and became really interested in Orgo. He explains topics very clearly, and is always happy to help. He provides old exams for practice which are rlly helpful. Definitely take him if you can, you wont regret!

Amazing lectures
Clear grading criteria
Gives good feedback
Class Info

Attendance Mandatory

39%

Textbook Required

37%

Grade Predictor

Your expected effort level

LowHigh

Predicted Grade

A-

95% confidence
Based on 24 grades
Most common grades:
A (8)
A+ (4)
A- (4)
Grade Distribution
A(12)B(3)C(2)D(2)F(0)A-/B+(7)
Based on 32 reported grades
A: 8
A+: 4
A-: 4
Not sure yet: 3
Common Tags
Tough grader (9)
Graded by few things (9)
Test heavy (7)
Amazing lectures (5)
Skip class? You won't pass. (5)
Lecture heavy (5)
ACCESSIBLE OUTSIDE CLASS (4)
Respected (4)
Rating Trend

Declining

-0.85 avg change
Jun
Aug
Dec
Jan
Feb
Dec
Last 6 months
Ratings by Course

ORGO261

5.0

(1)

CHEMLM

5.0

(1)

ORGO263

4.4

(5)

ORG263

4.0

(1)

ORGO1

4.0

(1)
+4 more courses
Difficulty by Course

ORGOORGO

5.0

ORG263

5.0

ORGO2

4.6

ORGO263

4.0

ORGO261

4.0

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