AI Rate Professor

Chemistry

Mario Vargas

CHEM12B · CHEM2 · CHEM12A · CHEM1A · CHEM20 · CHEMISTRY2 · 84 lifetime ratings

AI rating
34/100
RMP rating
2.5/5
Take again
28.17%
Difficulty
3.9

The decision

Avoid unless you already know chemistry well and .

Best fit · Self Taught ProTough GraderSelf-Teach RequiredDisorganizedTest HeavyLots of Homework
  • Many students say lectures are unhelpful so you must teach yourself chemistry.
  • hard to earn.
  • , and weak support.

Key questions

Four answers before you build your schedule.

Is this an easy A?

HardWork

32/100

, and heavy homework mean an A takes serious independent study even when curves exist.

Both formats call A-level work hard; online adds Proctorio pressure while .

Is the course easy?

Challenging

28/100

Chemistry content is fast, abstract, and and textbooks to keep up.

Online and in-person both describe high content difficulty; online complaints .

Is attendance flexible?

Mandatory

28/100

and warn that missing lecture or .

; online flexibility is uneven and still workload-heavy.

Is this professor recommended?

Avoid

28/100

About 28% would take again, and dominant comments urge switching professors due to teaching and organization issues.

; in-person has a minority of strong ochem endorsements.

Course guide

See how this professor fits your week.

Grading

Strict

28/100

Tough grader tags dominate, with frequent notes of harsh or .

Format shift

; online students emphasize no partial credit and .

Workload

Heavy

22/100

Lots of , and last-minute deadlines create a consistently heavy load.

Format shift

Both formats report heavy work; online also stresses multi-hour lecture videos.

Teaching experience

Poor

32/100

A minority praise practice problems and office help, but .

Format shift

; online teaching is widely called lazy or self-taught.

Assessment method

FocusOnExams

72/100

Exams and but often described as less aligned to tests.

Format shift

Online unit exams and Proctorio quizzes are central; in-person is also test heavy with .

Luni fit check

Weigh these signals against your actual schedule.

Get help balancing workload, grading, and timing when no option is an obvious fit.

Course format

Compare the in-person and online experience.

Classroom format

In person

33 reviews

High confidence · Best fit for Hardcore Learner

some organic students praise practice problems and curves, while , and organization poor.

Main concern

Even , and a flipped-classroom load of homework and exams.

What students said

“Please do yourself a favor and unless you want to teach yourself the entire course and end up barely passing.”
CHEM12A
“Dr. Vargas's class is tough, but you will leave his class with a if you put in the work.”
CHEM12B
“His class is VERY difficult to earn an A so if you want that A.”
CHEM12A

Remote format

Online

17 reviews

High confidence · Best fit for Self Taught Pro

Online students largely describe long prerecorded lectures, , and feeling forced to learn from YouTube or the book.

Main concern

and organization make the format especially painful.

What students said

“I had him for an online class, and he did not teach at all. He just did lectures and .”
CHEM2
“uses proctorio for exams and quizzes. office hours are useless when he tells you to just go back to the video/notes.”
CHEM2
“ . Proctorio for every test. Heavy workload. Long lectures.”
CHEM2

Exam style

Know what to expect from exams and major assignments.

and online proctoring, with only limited student-friendly elements like curves or .

ProctorioTest HeavyExam CurvesTake-Home QuizzesPop Quizzes

Assessment risk

Strict

35/100

Low score means less forgiving assessment conditions.

In person

In-person exams are often harder than practice and and .

Exam CurvesHarder Than PracticePop QuizzesOpen Book Take-Home Quizzes
“ and .”
CHEM12A
“ .”
CHEM12A

Online

Online reviews explicitly report Proctorio on quizzes and exams plus high-stakes unit tests.

ProctorioUnit ExamsQuizzesNo Partial Credit
“Proctorio for every test. Heavy workload. Long lectures.”
CHEM2
“uses proctorio for exams and quizzes.”
CHEM2

Student evidence

See what students actually said.

Top student voice

“Please do yourself a favor and unless you want to teach yourself the entire course and end up barely passing.”

Voice snapshots generated from 50 reviews across online and , and grading themes. Credibility rating: High.

📉 Teaching Quality

32/100

“Cannot actually teach to save his life. .”

🚫 Recommendation Rate

28/100

“Steer away from Professor Vargas!”

📚

30/100

“the only way you can succeed this in this class is treating it as a flipped classroom where you teach EVERYTHING to yourself”

⚖️

28/100

“His class is VERY difficult to earn an A so if you want that A.”

Theme 1

👨‍🏫 About Teaching Style

  • his very poor clarification skills when you ask him questions
  • lectures are as good as
  • He looked up on google on certain topic because he forgot.

Theme 2

📈 About Difficulty and Grades

  • prepare to dedicate a LOT of time and brain cells
  • exams and
  • he grades tough on everything

Theme 3

💻 About Online Experience

  • If there is one word that can describe him, it's 'lazy'.
  • 3-hour video lectures. Rarely available to students.
  • .

Data context

See exactly what the AI read.

Analysis sample

50

Recent reviews read by the AI

84

Lifetime ratings

88/100

Evidence confidence

50 detailed reviews across years and both formats show consistent themes of , and weak organization.

Inside 50 stored ratings

Quality ratings

5 out of 58
4 out of 522
3 out of 58
2 out of 511
1 out of 536

Course coverage

CHEM230 reviews
CHEM12A10 reviews
CHEM1A5 reviews
CHEM12B3 reviews
CHEM201 review
Show 1 more courses
CHEMISTRY21 review

Reported outcomes

B range results lead the reported letter grades.

38 reported outcomes

A range

9

A+ 4 · A 5

B range

14

B+ 1 · B 9 · B- 4

C range

4

C+ 1 · C 3

D range

0

No reported values

F

0

No reported values

No letter grade reported

11

Drop/Withdrawal 1 · Not sure yet 5 · Rather not say 5