2.2

Alan Roebuck

Mathematics - Chaffey College (all campuses)

2.2
Quality
4.1
Difficulty
14%
Would Retake
155
Reviews
2.2
Quality
4.1
Difficulty

14%

Would Retake

155

Reviews

Rating Distribution
155 total ratings

5

2

4

3

3

5

2

7

1

33

What Students Say

I had 410 with him and he managed to make a fairly easy class absolutely terrible

MATH410 - 1.0 rating

Lastly, he was very monotone and boring

MATH425 - 1.0 rating
Class Info

Online Classes

100%

Attendance Mandatory

38%

Grade Predictor

Your expected effort level

LowHigh

Predicted Grade

C-

95% confidence
Based on 37 grades
Most common grades:
F (7)
C+ (5)
A- (4)
Grade Distribution
A(2)B(2)C(13)D(10)F(7)A-/B+(6)
Based on 48 reported grades
F: 7
C+: 5
A-: 4
C: 4
Common Tags
Tough grader (32)
Lots of homework (30)
Lecture heavy (16)
Test heavy (16)
Tough Grader (7)
So many papers (6)
LOTS OF HOMEWORK (4)
Graded by few things (4)
Rating Trend

Declining

-0.27 avg change
Jun
Aug
Sep
Nov
Dec
Jan
Last 6 months
Ratings by Course

MATH31

4.0

(1)

MATH

3.0

(1)

MATH65A

3.0

(2)

MATH410

2.5

(2)

MATH65B

1.8

(6)
+9 more courses
Difficulty by Course

425

5.0

STATISTICS

5.0

CALC65B

5.0

COLLEGEALGEBRA

5.0

STATS10

5.0

Reviews (50)
1.0
5.0
MATH410
Grade: A-
Dec 18, 2017
Wouldn't take again

Professor Roebuck is something else. He's a good teacher no doubt, wouldn't want to take that way from someone... He has lots of downsides though. I had 410 with him and he managed to make a fairly easy class absolutely terrible. He doesn't want you to solve problems your own way because only his way is correct? And he is also not inspiring either

Tough Grader
LOTS OF HOMEWORK
TEST HEAVY
4.0
4.0
MATH410
Grade: C
Jan 3, 2018
Would take again

He is very good about showing you how to do the problems. Have a question? He will answer it. LOTS OF HOMEWORK but you can turn it in at anytime the day its due (even if he isnt in his office) for full credit.

Tough Grader
LOTS OF HOMEWORK
Tests are tough
1.0
5.0
MATH425
Grade: Drop/Withdrawal
Feb 24, 2018
Wouldn't take again

I took this class (with this professor and at 7:30 AM) because it fit my schedule. Little did I know that I would have to withdraw halfway through the semester or fail. I wasn't able to understand so I lived in the MSC and SI. Even if I got the right answer on the test, I'd get marked off if I didn't use his formula that I couldn't understand.

Tough Grader
GRADED BY FEW THINGS
LECTURE HEAVY
1.0
4.0
MATH425
Grade: Not sure yet
Apr 30, 2018
Wouldn't take again

He always wants the answer his way. If you do it a different way he will dock points out. and its honestly really a mess.

Tough Grader
1.0
4.0
MATH425
Grade: B+
Jun 4, 2018
Wouldn't take again

Professor Roebuck was nice for the most part, and was understanding when the occasional innocent mistakes were made. However, the grading criteria was ridiculous and very hard to understand. He also lectured way too quickly and it was too difficult to keep up with him during lecture. Lastly, he was very monotone and boring. I would not take again.

Tough Grader
Participation matters
LOTS OF HOMEWORK
1.0
5.0
MATH450
Grade: D-
Dec 10, 2018
Wouldn't take again

He is very lecture heavy, not too bad with attendance. However he lectures for almost 3 hours non stop and rarely asked if the students understood the lecture. If you mess up a part of the answer on a test he will deduct a half of the points. Do not take if you find math already difficult.

Tough Grader
Get ready to read
LECTURE HEAVY
1.0
4.0
MATH450
Grade: D-
Feb 4, 2019
Wouldn't take again

Note packets are not interactive. Does not explain the topic well.

Tough Grader
LOTS OF HOMEWORK
LECTURE HEAVY
1.0
5.0
MATH450
Grade: D+
May 25, 2019
Wouldn't take again

If you struggle with math or are taking other classes do not take this class. He assigns so much homework every week, and gives you packets of lecture notes that arent the slightest bit helpful. In a 2.5 hour class he gives one 10 min break and lectures down to the very last second. Not engaging at all. I found it very hard to pay attention.

Lots of homework
Skip class? You won't pass.
Lecture heavy
2.0
4.0
MATH25
Grade: D+
Nov 20, 2019
Wouldn't take again

He is a nice professor don't get me wrong but his teaching style isn't for most, unless you like getting talked at. It is his way or the highway when you take his class. He doesn't know how engage his students at all. My class went from 40 students to a solid 8-10 depending on the day. If that doesn't speak for its self i don't know what would.

Lots of homework
Lecture heavy
Tough grader
4.0
3.0
MATH31
Grade: A-
May 1, 2020
Would take again

Prof Roebuck always took the time to explain difficult concepts and answered as many questions as class time allowed. He would review with the class before tests and answered homework questions before we turned the work in. He was tough, but very fair and seemed to want everyone to succeed. Lectures can be boring, but he was able to keep me engaged

Gives good feedback
Skip class? You won't pass.
Tough grader
1.0
4.0
MATH425
Grade: D
Jun 2, 2020
Wouldn't take again

Professor Roebuck is so strict, and his exam is so difficult. I could not pass his class and too much homework. His class is kind of boring. I do not recommend taking his class. If you not good at math, do not take his class.

Lots of homework
Test heavy
Tough grader
4.0
5.0
MATH25
Sep 12, 2020
Wouldn't take again

I dont think he is a bad professor, but he does assign A LOT of homework. Prepare to spend about 2 hours on each HW assignment. He is a tough grader, but lets you know exactly how he wants you to answer. He wants you to use his methods. Its honestly not a big deal if you actually do the hw and watch the lectures. I got an A in the class.

Tough grader
Skip class? You won't pass.
Lots of homework
3.0
4.0
MATH65B
Grade: C
May 11, 2021
Would take again

He is a good professor himself, but his class and grading procedures are rough. His class consists of: weekly HW assignments, long/boring lecture videos/notes, and 4 heavy exams. HW BARELY affects your grade, do it+5% don't-5%. His tests are SUPER difficult, no MC, do not reflect HW questions, in order to pass class you NEED to ace the tests! :(

Lots of homework
Test heavy
Tough grader
3.0
3.0
MATH
Grade: Audit/No Grade
Apr 17, 2022
Would take again

I took his Collage Algebra prep class. He had all his lectures pre-typed up. I just needed to print them all out. No book needed. Lectures were easy to follow. He also had all his lectures on YouTube in full length if I wanted to go back and see a problem he may have skipped during class.

Clear grading criteria
Lots of homework
Lecture heavy
1.0
5.0
MATH25
Grade: C+
Dec 17, 2022

I took one of his classes not long ago and my experience was awful. The lectures were very long and boring, sometimes he would skip over certain problems that were on the tests. There is TONS of homework however it counts as only 5% of the grade. The tests are what you have to do well on to pass the class and he is a very very tough grader.

Tough grader
Lots of homework
Lecture heavy
1.0
5.0
MATH65B
Grade: F
May 25, 2023

This was my first time taking this professor and this class was difficult I couldn't pass so much homework that he would assign and very little tike to do it all and homework barely does anything to your grade so even if you do it or not there is no point would not recommend to take his class it was not helpful it was awful and I failed it unfair

Tough grader
Lots of homework
Test heavy
1.0
5.0
MATH25
Grade: C+
Aug 22, 2023

An insane amount of homework that is barley worth any points. Skips over a lot of information and makes instructions more complicated than they need be. Also if you use your own method of solving a math problem, it won't count because it will either be docked or considered cheating.

Tough grader
Lots of homework
Graded by few things
1.0
5.0
STATISTICS
Grade: Rather not say
Sep 25, 2023

He doesn't even let us use notes.

Tough grader
Beware of pop quizzes
Test heavy
1.0
5.0
STAT10
Grade: B
Oct 10, 2023

I would not take this professor again, he is very boring and does not explain his class well. Do not take this class ever. Take another statistics class.

Tough grader
Lots of homework
Test heavy
1.0
5.0
STAT10
Grade: A
Oct 10, 2023

He does not teach well and makes the class more difficult than it should be.

Tough grader
Lots of homework
Test heavy
1.0
5.0
MATH25
Grade: F
Nov 7, 2023

he was a very tough grader and showed no mercy

Tough grader
So many papers
Test heavy
1.0
5.0
STAT10
Grade: C
Jan 6, 2024

DO NOT TAKE THIS CLASS. He gives HOURS worth of homework plus he does have pre-recorded lectures but he does not help with all questions. The tests are so bad, he does not even let us use notes and does not give enough time for the test. I would take 6+ hours on homework just for his class everyday, and just to get a C. Worst experience of my life.

Lots of homework
Lecture heavy
Test heavy
2.0
5.0
STAT10
Grade: D
May 2, 2024

seems like a sweet guy but so monotonous in his method of teaching. heavy load of hw (like SEVERAL hours a week), dense tests (NOTES NOT ALLOWED), overall not very engaging or welcoming

Tough grader
Lots of homework
Lecture heavy
3.0
5.0
STAT10
Grade: B+
May 7, 2024

Homework dense and is very critical while grading it (expect to lose points), difficult tests, prepare to dedicate at least 5 hours a week. Prof is nice albeit tough teacher. To pass: Turn in late hw it's only 1/2 point reduction, watch lectures 2x speed, pay attention to study guide because it is a good rep of what he will ask on the test.

Tough grader
Lots of homework
1.0
5.0
STAT10
Grade: Not sure yet
Oct 8, 2024

Have to write everything down/ use the methods he teaches (if you use another way he'll suspect you're cheating) not worth it one assignment takes forever

Tough grader
Lots of homework
So many papers
1.0
5.0
MATH25
Grade: Drop/Withdrawal
Oct 21, 2024

This professor is the WORST professor I have ever had! He is boring, lectures from a projector screen, monotone and confusing. He gives a ton of homework which only worth 10% of your grade. Skip all the homework and focus on passing the test in order to pass the class. He is horrible, unless you're a math major-stay away from this professor!!

Tough grader
Lots of homework
Lecture heavy
1.0
5.0
STAT10
Grade: Not sure yet
Nov 9, 2024

He wants students to utilize only his method and doesn't give enough examples to help with repetition. He relies on the calculator but only states how to get to the correct menu once, gives HOURS worth of homework, and makes it more complicated than it is. Packets on top of packets. Makes me feel dumb at times.

Lots of homework
So many papers
Test heavy
1.0
5.0
425
Grade: F
Nov 16, 2024

Just do not!

Tough grader
Lots of homework
So many papers
1.0
5.0
CALC65B
Grade: F
Nov 16, 2024

No extra credit! Class has no structure!! Messy, unorganized, and disorganized. Slow grader. Nightmare to work with. Has no patient. Get lost! Avoid at all cost! Do not waster your money, value, and time on him.

Tough grader
Get ready to read
Lots of homework
2.0
5.0
MATH25
Grade: C+
Nov 29, 2024

Prepare for a challenging course with lots of homework, but unstuck ai can be a helpful study tool. The professor has a specific teaching style, so be ready to adapt.

1.0
4.0
MATH65B
Grade: F
Dec 5, 2024

The only assignments we had were homework and exams. He did not offer any extra credit or grading curves. His notes and way of explaining it are confusing. It felt that whenever we asked him a question, he would get mad. Honestly, save time and take this course online or at another school.

Tough grader
Test heavy
Graded by few things
1.0
4.0
MATH65A
Grade: F
Dec 6, 2024

He expects us to know more than we do and isn't as clear in explaining this as he should. His lectures are lengthy and not very easy to follow. Thorough on tests, but you will be accused of cheating if you use other methods. So much homework and it's worth basically nothing. My class averages between 40-60 on every exam. I would not recommend.

Tough grader
Lots of homework
Graded by few things
2.0
3.0
MATH25
Grade: D
Dec 6, 2024

n/a no comments to be left on this page.

Tough grader
Clear grading criteria
Test heavy
1.0
5.0
MATH25
Grade: F
Dec 12, 2024

Worst teacher in my entire life!! Do not take this class if you struggle with math. This teacher lectures are boring, hard to follow and monotone. He made us purchase a text book we never used. It was just overall a horrible experience. The "mean" test scores on the three test and final exam ranged from 29-38. Take this class at your own risk.

Tough grader
Lots of homework
Lecture heavy
3.0
5.0
MATH25
Grade: C+
Dec 20, 2024

Difficult, lots of homework, sometimes points are docked for minor mistakes but overall okay with grading.

Tough grader
Lots of homework
Graded by few things
1.0
5.0
MATH65B
Grade: Rather not say
Feb 20, 2025

the worst college professor i've ever had, just reads off a packet the entire time. be expected to learn calc all on your own.

Tough grader
Lots of homework
Hilarious
1.0
5.0
STAT10
Grade: C-
Apr 12, 2025

He grades hella hard, doesn't let you use notes on the tests, tests aren't graded on a curve.

Tough grader
Gives good feedback
5.0
3.0
STAT10
Grade: A-
Apr 26, 2025
Would take again

I've taken stats with two other professors and he's the best i've had. Definitely not an easy class but if you watch every lecture and do every assignment it can be easy, just be prepared to put in the work.

Amazing lectures
Clear grading criteria
Gives good feedback
1.0
5.0
COLLEGEALGEBRA
Grade: Drop/Withdrawal
Jun 4, 2025

doesn't respect your time, doesn't include everything during lecture, tells you to watch a youtube video of a previous lecture instead, guys a joke. do not take summer class.

Lots of homework
2.0
5.0
STAT10
Grade: C+
Jun 8, 2025

Okay Professor Roebuck is not the greatest teacher but he does try and if you listen and do ALL the work you can pass the class. I am the worst in math and there were days I wanted to give up but I kept going. I passed with a C. Was it hard, YES EXTREMELY. Does he make it easier? No. But he gives you every thing you need to pass.

Tough grader
Lecture heavy
Test heavy
1.0
5.0
MATH25
Grade: Rather not say
Aug 3, 2025

This class was bad not kidding. He does give you printed notes which is great! However, the notes he provides never matches up with the homework. Yes he answers emails very quick, but the exams are harder than the homework, and study guide. Recommend to not take this class if your new to taking Calculus

Tough grader
Test heavy
2.0
5.0
MATH65B
Sep 24, 2025

His lectures are very thorough, but that's to a detriment. 2 hours of lecturing on things with barely any time to actually grasp the concepts if you aren't eating and breathing Calculus. If you don't have the time to absolutely ingrain the concepts, you're going to fail. If you get 2 or 3 problems wrong on the ~14 problem exams, you're getting a D.

Get ready to read
Lecture heavy
Test heavy
2.0
4.0
STAT10
Grade: A-
Sep 30, 2025

Honestly, a lot of work and a lot of lectures.

Tough grader
Lots of homework
Lecture heavy
1.0
5.0
STAT10
Grade: C-
Nov 3, 2025

Do not take this professor under any circumstances. I had him for stats and all he would do for a THREE hour class was lecture. Hed give us these fat packets of notes. For the hw you gotta go home and wing it. And just hope you only have one math assignment cuz if its 3 your gonna be doing it for HOURS and itd only be worth like 2pts no joke.

Lots of homework
Lecture heavy
1.0
4.0
STAT10
Grade: C-
Nov 5, 2025

Spends multiple hours straight doing nothing but lectures and sends you home with homework worth 2 points each assignment, only for you to have to teach yourself the material because you learned nothing from him. Whole class is a crazy waste of time and you'd be better off finding a different professor.

Tough grader
So many papers
Lecture heavy
1.0
5.0
MATH25
Grade: Not sure yet
Nov 7, 2025

not even done with his class yet but i can't stand it. i've given up doing homework because it's only 10% of your grade but still takes a whole day to complete ONE assignment. if you do okay on the tests you MIGHT be fine. just do not take this class. i beg

Lots of homework
Lecture heavy
Test heavy
1.0
5.0
STATS10
Grade: C-
Nov 13, 2025

He's wishy washy with the grading sometimes you'll full credit if you show all your work others you'll get points taken off because you showed your work. Very tough grader takes points off for every single thing

Tough grader
Lots of homework
3.0
3.0
MATH65B
Grade: B-
Nov 22, 2025

Despite the overwhelming amount of negative reviews, Roebuck truly is a good professor. Yes, the lectures are long and he assigns a lot of homework, but it's for a reason. Roebuck doesn't waste time with unnecessary chatter; he goes straight into why you're there, to learn! Tests do reflect what is on the homework. Time manage well and you'll pass.

Lots of homework
Lecture heavy
Test heavy
5.0
4.0
MATH65A
Grade: A
Dec 16, 2025
Would take again

I had Professor Roebuck for Math65A, Calculus I. He explained very much in his zoom meetings, and they were recorded so I could go back. I turned in most assignments late, however the penalty, he accepted and gave me credit for it. If you follow his style of teacher you will definitely succeed. I would if you are willing to put all effort into it.

Tough grader
So many papers
Lecture heavy
1.0
5.0
STATS10
Grade: C
Jan 3, 2026

The homework is worth 2 points and is not even worth it for the work. If you do not use his methods he accuses you of cheating even though he gives you the formulas on the 20+ page study guide. He takes unnecessary points if you show your work and if you do not.

Tough grader
Lots of homework
Class Info

Online Classes

100%

Attendance Mandatory

38%

Grade Predictor

Your expected effort level

LowHigh

Predicted Grade

C-

95% confidence
Based on 37 grades
Most common grades:
F (7)
C+ (5)
A- (4)
Grade Distribution
A(2)B(2)C(13)D(10)F(7)A-/B+(6)
Based on 48 reported grades
F: 7
C+: 5
A-: 4
C: 4
Common Tags
Tough grader (32)
Lots of homework (30)
Lecture heavy (16)
Test heavy (16)
Tough Grader (7)
So many papers (6)
LOTS OF HOMEWORK (4)
Graded by few things (4)
Rating Trend

Declining

-0.27 avg change
Jun
Aug
Sep
Nov
Dec
Jan
Last 6 months
Ratings by Course

MATH31

4.0

(1)

MATH

3.0

(1)

MATH65A

3.0

(2)

MATH410

2.5

(2)

MATH65B

1.8

(6)
+9 more courses
Difficulty by Course

425

5.0

STATISTICS

5.0

CALC65B

5.0

COLLEGEALGEBRA

5.0

STATS10

5.0

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