MATH 33B
Differential Equations
Grades
3.41
Average grade awarded in MATH 33B. Not a student rating: this is what the grades were.
In the A range
65%
of the 4,509 letter grades
D, F or W
5.7%
of every letter grade awarded, plus withdrawals
Taken pass/no pass
<1%
64% of those passed
The registrar's own records: 4,509 grades over 16 terms, Fall 2021 to Fall 2025. Every instructor is pooled here.
What is inside that record
4 of those terms are summer sessions, and summer sessions are counted here.
The table below splits them, and term averages across those 16 terms ran 2.83 to 3.85.
Historical grades for all professors, across recorded terms. The course summary above includes all professors.
- A+ 383 · 8.5%
- A 2,131 · 47.3%
- A- 436 · 9.7%
- B+ 317 · 7.0%
- B 396 · 8.8%
- B- 189 · 4.2%
- C+ 148 · 3.3%
- C 177 · 3.9%
- C- 75 · 1.7%
- D+ 36 · 0.8%
- D 55 · 1.2%
- D- 33 · 0.7%
- F 133 · 2.9%
- P 14 of 4,551
- NP 8 of 4,551
- I 18 of 4,551
- DR 2 of 4,551
Percentages are of the 4,509 letter grades. Grey bars are non-letter outcomes: passes (P), no-passes (NP), incompletes (I), and withdrawals (DR).
How the non-letter outcomes are counted
They are excluded from the GPA entirely rather than scored, because counting a P as a 4.0 would be a fabrication.
Withdrawals are the exception to "excluded": DR is not scored, but it IS counted in the D, F or W figure above, which is reported over the letter grades plus the withdrawals. Pass/no pass and S/U outcomes are outside that figure on both sides.
By instructor
| Instructor | Predicted GPA | Raw | n | Terms | A range | Workload | Fall 2025 |
|---|---|---|---|---|---|---|---|
| WANG, CHENGXI reviews ↗ | 3.80 | 3.81 | 1,215 | 4 | 88% | very light | not teaching it |
| MARSDEN, KATIE reviews ↗ | 3.07 | 3.06 | 761 | 3 | 49% | very light | not teaching it |
| MIN, HYUNKI reviews ↗ | 3.83 | 3.85 | 400 | 1 | 89% | very light | not teaching it |
| MUNOZ, SEBASTIAN reviews ↗ | 3.33 | 3.33 | 391 | 2 | 59% | - | not teaching it |
| ROPER, MARCUS LEIGH reviews ↗ | 2.75 | 2.72 | 366 | 4 | 35% | heavy | not teaching it |
| PALMER, AARON Z reviews ↗ | 3.39 | 3.39 | 204 | 1 | 55% | - | not teaching it |
| ZHAO, ZIWEN reviews ↗ | 3.43 | 3.43 | 196 | 1 | 55% | - | not teaching it |
| GLEIZER, OLEG reviews ↗ | 2.95 | 2.90 | 188 | 1 | 37% | - | not teaching it |
| MAIMAITIYIMING, WUMAIER reviews ↗ | 2.87 | 2.82 | 187 | 1 | 36% | very light | not teaching it |
| ACEVES SANCHEZ, PEDRO reviews ↗ | 3.62 | 3.64 | 183 | 1 | 78% | - | not teaching it |
| PALMER, AARON ZEFF reviews ↗ | 3.74 | 3.77 | 181 | 1 | 85% | - | not teaching it |
| NEGRINI, ELISA reviews ↗ | 3.41 | 3.41 | 132 | 1 | 62% | very light | not teaching it |
| GREENE, ROBERT E reviews ↗ | 3.24 | 3.21 | 105 | 2 | 55% | - | not teaching it |
Why Predicted is not the Raw average
“Predicted” is shrunk toward the course average, which is itself shrunk toward the department, so an instructor with a handful of students sits near the course mean rather than topping the list.
Grade records describe outcomes. For what a course is like to take, read student reviews written on dibs below or follow the separate external review link.
Workload and assignments
Work types reported in BruinWalk reviews of this course, across recorded instructors and terms. They may differ from this term's syllabus.
dibs has not read this course’s reviews, so it cannot say what kind of work it sets. That is dibs not having looked. It is not a course without papers or exams, and the reviews linked below are the answer until dibs catches up.
What comes first
The chain dibs can see is 3 courses long before MATH 33B. Read from Fall 2026, because dibs has not read a class page for MATH 33B in Fall 2025 and a department can change what it requires. dibs has read a class page for every course in it.
Counted in courses rather than quarters: dibs does not know which of them a department lets you take together.
In Falls
Ran in 5 of the last 5 Falls.
From the terms dibs holds, which start in Fall 2021 and exclude summer. A department can run a course in a quarter it never has before.
From the registrar's catalog
Lecture, three hours; discussion, one hour. Enforced requisite: course 31B with grade of C- or better. Highly recommended: course 33A. First-order, linear differential equations; second-order, linear differential equations with constant coefficients; power series solutions; linear systems. P/NP or letter grading.
Sections in Fall 2025
From the people who took it
Student reviews
What taking MATH 33B was like: the work, the teaching, and what students wish they’d known.
Your experience could be the first.
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External reviews are separate and do not count toward the dibs rating.