2.4

Lei Pei

Chemistry - University of Alberta

2.4
Quality
4.1
Difficulty
34%
Would Retake
85
Reviews
2.4
Quality
4.1
Difficulty
2.4
Helpful
2.4
Clarity

34%

Would Retake

85

Reviews

Rating Distribution
Official

5

15

4

14

3

5

2

6

1

46

What Students Say

Her lectures are boring and slow

CHEM103 - 1.0 rating

My experience with Dr

chem-103 - 1.0 rating
Class Info

Attendance Mandatory

5%

Grade Predictor

Your expected effort level

LowHigh

Predicted Grade

B

95% confidence
Based on 29 grades
Most common grades:
Not sure yet (49)
A (8)
C+ (4)
Grade Distribution
A(11)B(4)C(6)D(1)F(1)A-/B+(6)
Based on 79 reported grades
Not sure yet: 49
A: 8
C+: 4
B+: 4
Common Tags
Lecture heavy (16)
Accessible outside class (11)
Caring (10)
Test heavy (9)
Amazing lectures (8)
Tough grader (7)
Get ready to read (7)
Hilarious (5)
Rating Trend

Declining

-1.24 avg change
Sep
Jan
Jul
Nov
Dec
Jan
Last 6 months
Ratings by Course

Chem-105

4.5

(2)

CHEM103

3.7

(24)

chem-103

1.8

(60)
Difficulty by Course

chem-103

4.4

CHEM103

3.3

Chem-105

2.5

Reviews (86)
5.0
2.0
Chem-105
Grade: A+
Apr 26, 2024
Would take again

Lei is very kind, she learned the names of many of the students that attended the lectures, and she was very willing to help all students after lectures and had good office hours.

4.0
3.0
Chem-105
Grade: A-
Sep 4, 2024
Would take again

Nice prof very active class

1.0
3.0
chem-103
Grade: C+
Jan 6, 2025

Do not take

Tough grader
Test heavy
4.0
4.0
chem-103
Grade: B-
Jan 6, 2025
Would take again

Good Prof. Goes through material fairly quickly but takes time on example questions. She also records all her lectures so you can rewatch as many times as you need. We ran out of time before the second midterm and were forced to learn a large chunk of the periodic table by ourselves. Other than that she is there if you have questions.

Lecture heavy
Test heavy
Accessible outside class
4.0
2.0
chem-103
Jan 7, 2025
Would take again

During the 50-minute lecture period, she was able to explain the important concepts pretty well. Even though we had to rush our lectures, she would stay after class to answer questions and her office hours were also helpful. She's good at engaging her students by demonstrating concepts in class and making funny analogies.

4.0
3.0
chem-103
Grade: A
Jan 17, 2025
Would take again

[AUCHE110] She's really nice and makes the class fun. Make sure to do the problem sets and online quizzes because all the in-class quizzes, tests, and the final is based off of that. Practice, practice, practice!

Participation matters
Clear grading criteria
Gives good feedback
5.0
3.0
chem-103
Grade: B+
Jan 20, 2025
Would take again

Great prof, had recorded and online lectures for every class. Went above and beyond to provide extra support and review sessions for students. Great Proffesor

5.0
3.0
chem-103
Jan 31, 2025
Would take again

She truly cared about your success and put in extra effort for teaching demonstrations, outside of class mini-lectures, and review. Her excitement for Chemistry made the content engaging and fun!

Amazing lectures
5.0
2.0
chem-103
Grade: A+
Jul 6, 2025
Would take again

Dr. Pei was a wonderful CHEM 103 prof! (took it Fall 2024 and forgot to review) Super kind, good lectures and supports her students with lots of resources.

Hilarious
Caring
1.0
5.0
chem-103
Grade: B+
Nov 17, 2025

I took Chem 103 with this professor. While Chemistry is a lovely and easy-to-follow course, the course felt harder than necessary due to limited access to references and resources. The class focused mainly on exam-based notes, which may suit grade-obsessed students. I won't take any course from this professor.

1.0
5.0
chem-103
Nov 19, 2025

The course appears designed for students who are extremely grade-driven, which did not match my learning preferences. I would not choose to take another course with her.

5.0
3.0
chem-103
Nov 21, 2025
Would take again

Dr. Pei was great during CHEM103, her course materials and practice problem sets were always similar to the exam questions we were given. I also enjoyed her analogies and in-class presentations during class as it made learning concepts much easier and much more engaging!

Accessible outside class
1.0
5.0
chem-103
Grade: B+
Nov 23, 2025

I don't recommend others. I regretted!!!

1.0
5.0
chem-103
Grade: Not sure yet
Dec 11, 2025

Thank you, Professor, for making me hate Chemistry. (My best course of high school)

1.0
5.0
chem-103
Grade: Not sure yet
Dec 11, 2025

Strongly No

1.0
5.0
CHEM103
Grade: Not sure yet
Dec 12, 2025

Prof Lei is kind and caring in person. Attendance isn't mandatory, but most of the exam questions are given and revealed through in-class notes. Since those annotated notes aren't posted on Canvas, it becomes an indirect way of forcing attendance, basically, “come to class and you'll know what's on the exam.” Anyway, not really my preference.

1.0
5.0
chem-103
Grade: Not sure yet
Dec 13, 2025

It's not a good fit for me.

1.0
5.0
chem-103
Grade: Not sure yet
Dec 13, 2025

👎👎👎

1.0
5.0
chem-103
Grade: Not sure yet
Dec 13, 2025

No need to study and attend class. All is waste of time and energy. Just get previous years exam papers and practice it. At least you have A-

1.0
5.0
chem-103
Grade: B
Dec 14, 2025

She is not fair though. She won't be my favourite.

2.0
4.0
chem-103
Grade: Not sure yet
Dec 14, 2025

You need to watch hours worth of lecture content to get all the notes lol. better off asking someone who went to the lecture. her handwriting is ass too. FIRST YEARS PLEASE MEMORIZE THE P BLOCK THINGS FULLY BECAUSE THE FINAL IS GOING TO HAVE LIKE 2 PAGES OF THAT!

Tough grader
Lecture heavy
Accessible outside class
1.0
5.0
chem-103
Grade: Not sure yet
Dec 14, 2025

Choose her only if you have a friend, senior, or TA with saved past exams. It's unclear why she teaches such a heavy-credit course. Very disorganized notes across Canvas and Stemple, and a $50 paid access demand unnecessary energy. Without possing past exams, all your academic energy will be exploited. Avoid her if you lack past exams.

1.0
5.0
chem-103
Grade: Not sure yet
Dec 14, 2025

Fully agreed with the person said, she "exploited our academic energy". I really exploited my energy.

1.0
5.0
chem-103
Grade: Not sure yet
Dec 14, 2025

I don't believe Chemistry was her major.

1.0
4.0
chem-103
Grade: Not sure yet
Dec 14, 2025

Do not take.

1.0
5.0
chem-103
Grade: Not sure yet
Dec 14, 2025

Quality/Quantity < 0. Big academic title, with low quality.

2.0
5.0
chem-103
Grade: Not sure yet
Dec 14, 2025

Lei is such a nice professor and is accessible during office hours. She replies to emails promptly. However, her notes are poor and hard to follow, and she didn't post previous years' practice exams. Overall, she won't be on my list.

1.0
5.0
chem-103
Grade: Not sure yet
Dec 14, 2025

It wasn't such a good experience.

2.0
4.0
chem-103
Grade: Not sure yet
Dec 14, 2025

Sorry, you were not good for me Prof.

3.0
3.0
chem-103
Grade: Not sure yet
Dec 14, 2025

She was nice, but all her notes made me bookish haha. She is very nice person though!

3.0
4.0
chem-103
Grade: Not sure yet
Dec 15, 2025

lots of material you have to learn by yourself outside of lectures, tried to be engaging for 8 ams but was still very boring

Get ready to read
Lecture heavy
4.0
3.0
CHEM103
Grade: Not sure yet
Dec 15, 2025
Would take again

I really enjoyed Dr Pei's class. She explains things very well and clearly, and gives good analogies to help you remember. She did have us learn some things on our own though which I wasn't a fan of. Oh and the final took years off my life. Love her though, she was so funny at times. I recommend!!

Hilarious
Respected
Lecture heavy
4.0
3.0
CHEM103
Grade: Not sure yet
Dec 15, 2025
Would take again

Explained concepts clearly in class, and her analogies were really helpful. Notes were a little unclear at times but mostly fine. She isn't allowed to give out past exams because the department doesn't allow her to. Her lectures/the class aren't as bad as other people are saying as long as you actually study effectively

Amazing lectures
3.0
5.0
chem-103
Grade: Not sure yet
Dec 15, 2025

Excellent personality, kind, accessible and nice,,,,, but won't chose to become my Profs.

3.0
3.0
chem-103
Grade: Not sure yet
Dec 15, 2025

She was okay!

4.0
3.0
CHEM103
Grade: Not sure yet
Dec 15, 2025
Would take again

Lectures are fairly engaging and important, pretty much the only ones i didnt skip lmao Dont pay for stemble just use school computers easiest saved 50 bucks of my life only complaint is that self study was required for a lesson, but thats tolerable.

Lecture heavy
Test heavy
Accessible outside class
5.0
3.0
CHEM103
Grade: Not sure yet
Dec 15, 2025
Would take again

I loved her. It was clear that she was passionate and wanted to see success as she recorded every lecture (well prepared btw), gave lots of problem sets and exam prep material, put effort into knowing names, sent reminders, had helpful demos and analogies, and so forth. Most complaints here are outside her control. Show up and the class is great.

Amazing lectures
Caring
Accessible outside class
1.0
5.0
chem-103
Grade: D+
Dec 15, 2025

i got cooked on the final

Participation matters
Lecture heavy
1.0
5.0
chem-103
Grade: F
Dec 15, 2025

Wasted my time for nothing. Do not chose!

1.0
5.0
chem-103
Grade: Not sure yet
Dec 15, 2025

Worst experience of my first year journey. Poor notes, disorganised materials, 50 packs for Stemple, no references books, over loaded and heavy lectures, and no past exams.

1.0
5.0
chem-103
Grade: Not sure yet
Dec 15, 2025

The lectures and practice problems were totally different from the final exam, I suggest that it may not have been prepared by the instructor herself.

1.0
5.0
chem-103
Grade: Not sure yet
Dec 15, 2025

I don't want say anything, simply no.

1.0
5.0
chem-103
Grade: Not sure yet
Dec 15, 2025

I made the wrong choice.

2.0
4.0
chem-103
Grade: Not sure yet
Dec 15, 2025

The notes are difficult to follow due to poorly referenced, and the final exam felt more challenging than what was covered in the lectures. She is good person tho!

4.0
3.0
chem-103
Grade: A
Dec 16, 2025
Would take again

She was a really nice lady, and very funny during her lectures as well. Everyone who tanked her ratings because of her final exam genuinely just did not study enough for it. It was definitely difficult, but still doable. She is very knowledgeable on the course, and a great prof, just beware of her 8am lectures and not falling asleep.

Caring
Lecture heavy
Test heavy
1.0
5.0
CHEM103
Grade: B
Dec 16, 2025

Terrible professor, doesn't teach half of the most important things on a final exam in class and expects you to memorize half of the course with terribly organized online &#8220;lessons&#8221;. Doesn't give any type of practice for final exams or midterms, and the one that she might provide if you're lucky is not relatable at all to the exam that you're taking

Online Savvy
2.0
4.0
chem-103
Grade: Not sure yet
Dec 16, 2025

Dr. Lei's course was not very difficult overall, and she was not a bad instructor. However, the lecture notes were not well prepared or properly referenced. At times, quizzes from Stemple were forgotten, likely because access was only available on campus computers since you didn't pay 50. The problem sets and exams were quite different.

1.0
5.0
chem-103
Grade: Not sure yet
Dec 16, 2025

The professor was not bad overall&#8212;accessible, kind, and even funny. However, make sure you got the past exams before choosing her; otherwise, you will only get stress and depression. !!!! Got past exams before choosing her !!!!!!

1.0
5.0
chem-103
Grade: Not sure yet
Dec 16, 2025

DrLei never missed a class and was accessible during office hours. However, considering the amount of time and effort I put into the course, with the exam I received felt completely disproportionate, like sky and ground. It was a very discouraging experience,,,

4.0
3.0
CHEM103
Dec 16, 2025

Dr. Pei is nice prof and seems to actually want her students to succeed. Contrary to the other ratings if you actually studied and did the practice problems you would have done fine on the midterm and final. My only complain is that we didn't have time to do P block elements lecture in class, which was purely memorization and tested on the final.

5.0
1.0
CHEM103
Grade: Rather not say
Dec 16, 2025

ts teach loves testing p block which she never even taught us and we had to purely memorize from a online lesson on the big stumble. fire professor!! please test me more on p block and toss my grade &#128539;

Tough grader
Get ready to read
Test heavy
1.0
5.0
chem-103
Grade: Not sure yet
Dec 16, 2025

Final exam was one of the hardest out of all the engineering courses. Made 50% of the final on a unit she never covered and expected us to do by ourselves and then also lied to us about the final split saying that it would only be 13% of the final, it was not.

1.0
5.0
CHEM103
Grade: Not sure yet
Dec 16, 2025

doesn't want to teach material herself so she makes you read a 33 slide stemble on sum p block which makes up like 50% of the final and midterm. it's not like i stayed up till 6am just to quizzed on what boron does in the day to day society &#9996;&#65039;

Tough grader
Get ready to read
Test heavy
5.0
3.0
CHEM103
Grade: Not sure yet
Dec 16, 2025
Would take again

It's a tough course, she was a wonderful professor who told us everything we needed to know and emphasized the important stuff. Everyone here is complaining about the p block stuff but she told us well in advance that she wouldn't have time to cover it and gave us ample resources to study the material. The experiments were awesome as well

1.0
5.0
chem-103
Grade: Not sure yet
Dec 17, 2025

All my engineering courses provide proper notes, references, past exams, and even annotated material. In her course, however, only video lectures, problem sets and notes that are incomplete and often blank are posted. I'm not sure if this is a lack of interest in sharing her knowledge or limited mastery of the course. For me, THE WORST

1.0
5.0
chem-103
Grade: Not sure yet
Dec 17, 2025

One of my biggest regrets. I don't recommend, do not take please.

1.0
5.0
CHEM103
Grade: Not sure yet
Dec 17, 2025

Her lectures were mediocre (The onesShe&#8221;taught&#8221;), the rest which compiles of half of the final exam she doesn't teach and makes you pay $50 to be able to take quizzes and to learn what she decides she doesn't want to teach despite all the students already funding her underwhelming performance. Terrible professor, she needs to be removed as a prof&#9996;&#65039;

Tough grader
Test heavy
Online Savvy
1.0
5.0
chem-103
Grade: Not sure yet
Dec 17, 2025

I don't recommend.

1.0
5.0
chem-103
Grade: Not sure yet
Dec 17, 2025

Not a good professor for my first-year. She didn't cover nearly half the syllabu and told us to study it ourselves. Shockingly, half of the final exam came from that uncovered material. If we had to self-study, why did we pay thousands for the course and extra $50 for Stemple for just 5% quizes? It was a business, don't recommend

1.0
5.0
chem-103
Grade: Not sure yet
Dec 17, 2025

Honestly, she is not very effective in this course, even though she is kind and nice. If you are a first-year engineering student and passionate about chemistry, choose Prof. H. Taha.

1.0
5.0
chem-103
Grade: Not sure yet
Dec 17, 2025

Most terrible prof

1.0
5.0
chem-103
Grade: Not sure yet
Dec 17, 2025

She didn't finish the full syllabus and told us to study the P-block on our own. The worst professor of the semester, she is there to discourage. I do not recommend at all.

1.0
5.0
chem-103
Dec 17, 2025

She didn't cover all the syllabu throughout the semester, paid 50 bucks for Stemple which holds only 5% of quizes. I haven't seen smth special.

Tough grader
Lecture heavy
Accessible outside class
4.0
3.0
chem-103
Grade: Not sure yet
Dec 17, 2025
Would take again

Lei Pei is a great professor despite all the things other people are saying about her. It was made very clear to the class on multiple occasions that the P-Block material was not going to be covered in lectures. We were given ample time and resources to complete this material and were warned multiple times that this material IS ON THE FINAL.

Get ready to read
Lecture heavy
1.0
5.0
chem-103
Grade: Not sure yet
Dec 17, 2025

My experience with Dr. Lei was not good. Her notes were poorly organized and inadequately referenced, with no past exam practice and little guidance for the final. No matter what grade she gave, I won't appreciate or blame myself. Not my preference

4.0
3.0
CHEM103
Grade: Not sure yet
Dec 18, 2025
Would take again

Lectures were good and informative. These were available through zoom and were even recorded so content was always accessible to us. Notes were awesome and the difficulty of exams were comparable to that of the problem sets, although somewhat memorization heavy. P-block content given in the same note/yuja video format would've made this a 5/5.

Lecture heavy
Test heavy
1.0
5.0
chem-103
Grade: Not sure yet
Dec 19, 2025

Her class was boring, with poor notes and a lack of pastxams. Not my favourite.

Tough grader
Test heavy
Accessible outside class
1.0
5.0
chem-103
Grade: Not sure yet
Dec 19, 2025

I WON'T RECOMMEND.

3.0
2.0
chem-103
Grade: A-
Dec 19, 2025
Would take again

Dr. Pei was a very effective professor. Around 10% of students went to the lectures, so all the bad reviews are from those who are surprised that they didn't do great in the course when they didn't go to any lectures or do ANY of the assignments without AI. If you put in the necessary work, Dr. Pei is great and you will be successful. DO THE WORK!

Get ready to read
Caring
Lecture heavy
4.0
3.0
CHEM103
Grade: B-
Dec 20, 2025
Would take again

Lei Pei is a very good professor. Through no fault of her own, the course is boring. Notes are well made and every resource we can have is given. Negative reviews are almost all baseless. No past exams: entire department doesnt do that. ESSC doss supply! No p-block: again, the entire department. Stemble: how is that her fault? Again department.

Get ready to read
Amazing lectures
Caring
5.0
3.0
CHEM103
Grade: A
Dec 20, 2025
Would take again

Lei Pei is a great professor. Negative reviews are almost all baseless. No past exams: entire department doesnt do that. ESSC doss supply! No p-block: again, the entire department. Stemble: how is that her fault? Again department.

Amazing lectures
Caring
Lecture heavy
4.0
4.0
CHEM103
Grade: C-
Dec 20, 2025
Would take again

As u can see I got a C- in the course. However that's because of my own inability, I showed up to 2 lectures the entire semester and studied a total of 3 days and still passed. Lei Pei is a wonderful person and truly cares, she does NOT deserve all these ratings. My advice? Stay caught up, she gives a lot to work on but if u do it, you'll be fine.

Get ready to read
Lots of homework
Lecture heavy
5.0
3.0
CHEM103
Grade: A+
Dec 20, 2025
Would take again

As long as you go to the lectures and do the assigned reading you'll be totally fine. She's really funny and responds to emails quickly, which is always nice.

Caring
Lecture heavy
Accessible outside class
1.0
5.0
chem-103
Grade: Not sure yet
Dec 20, 2025

She was not good prof for me, sorry.

5.0
2.0
CHEM103
Grade: A
Dec 20, 2025
Would take again

Genuinely a great person and a great prof. Lectures are very clear and she's very keen on actually explaining the chemistry behind everything instead of just memorizing. Also has very funny but effective analogies that I actually used to understand the material. Lectures are live on zoom and also recorded which makes studying for exams a lot easier

Hilarious
Caring
1.0
5.0
chem-103
Grade: Not sure yet
Dec 20, 2025

Why are you guys (agents) trying to cover her fault as a department fault? Isn't she a member of the Chem department? Additionally, it's not advisable to pressure students to rate her highly. Everyone says what experienced. To sum up, all said is true, since she is part of the Chem department, she should carry and fix her faults.

2.0
4.0
chem-103
Grade: C+
Dec 20, 2025

The worst professor ever. Who you know matters, since past exams can be obtained from them. Do not choose please

5.0
3.0
CHEM103
Grade: A
Dec 20, 2025
Would take again

I'm devastated by the review bombing. She had a 90% rating before this. She was arguably the best professor I had in my first semester. She consistently gave relevant analogies and examples to explain content and help keep us engaged. That being said, we were told to complete 2 lessons on our own due to students' push for "slower paced" content.

Amazing lectures
Gives good feedback
Hilarious
1.0
4.0
CHEM103
Grade: C
Dec 21, 2025
Would take again

Her lectures are boring and slow. She didn't finish the curriculum and had us learn a bunch of stuff by ourselves and the midterms and final were not similar at all to what she taught. Also she didn't post any past midterms or finals and made us pay $50 for online notes and quizzes. Don't know why it says I would take her again cuz I wouldn't.

Gives good feedback
Lecture heavy
Accessible outside class
1.0
4.0
CHEM103
Grade: A
Dec 21, 2025

She would always yap about how u jus had to understand it and it would make sense. Unfortunately this is easier said than done.

4.0
3.0
CHEM103
Grade: A
Dec 21, 2025
Would take again

Her lectures are easy to follow, and she's the friendliest person ever. Unfortunately we didn't have enough time to cover all the material during class, but she was very clear about what we had to study on our own and posted video lectures for it. Just do the practice problems, don't skip lectures, and you'll be fine.

5.0
3.0
CHEM103
Dec 24, 2025
Would take again

Her lectures are very clear compared to other profs and she tries her best to make sure information is delivered in an understandable way. She tries to make lectures engaging and lighthearted such as bringing in demonstrations. It's true that there are some things that she tells you to study on your own but people exaggerate the amount.

Amazing lectures
Caring
Accessible outside class
1.0
5.0
chem-103
Grade: C+
Dec 26, 2025

Do not take Chem103 with her.

5.0
3.0
CHEM103
Grade: B+
Dec 29, 2025
Would take again

Lowkey a very funny prof. her lectures were not attended by most but she covered all the material on exams. she uploads lecture videos online which is helpful. she wont provide completed notes as she wants people to attend lectures. the lectures can get long but goes into detail and explains questions that are almost exact on the exams.

Hilarious
Caring
Accessible outside class
5.0
3.0
CHEM103
Grade: A
Jan 1, 2026
Would take again

Honestly she was a great prof, I had her at 8am but since she records and does zoom meets for her lectures I was able to just join from home. She puts in a lot of effort into the lectures so just attend them and you'll do fine. I know people downvoted her after the final but Icl everything that was on the final, she said would be on the final lol.

Amazing lectures
Lecture heavy
1.0
5.0
chem-103
Grade: C+
Jan 2, 2026

The course unnecessarily complicates simple concepts. The pressure and stress placed on students, along with unclear info about the final exam, made the course difficult to navigate. Additionally, the lecture notes were often poorly referenced and lacked clarity, which made learning more challenging than it needed to be.

Class Info

Attendance Mandatory

5%

Grade Predictor

Your expected effort level

LowHigh

Predicted Grade

B

95% confidence
Based on 29 grades
Most common grades:
Not sure yet (49)
A (8)
C+ (4)
Grade Distribution
A(11)B(4)C(6)D(1)F(1)A-/B+(6)
Based on 79 reported grades
Not sure yet: 49
A: 8
C+: 4
B+: 4
Common Tags
Lecture heavy (16)
Accessible outside class (11)
Caring (10)
Test heavy (9)
Amazing lectures (8)
Tough grader (7)
Get ready to read (7)
Hilarious (5)
Rating Trend

Declining

-1.24 avg change
Sep
Jan
Jul
Nov
Dec
Jan
Last 6 months
Ratings by Course

Chem-105

4.5

(2)

CHEM103

3.7

(24)

chem-103

1.8

(60)
Difficulty by Course

chem-103

4.4

CHEM103

3.3

Chem-105

2.5

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