MATH 225C
Algebraic Topology
Grades
3.95
Average grade awarded in MATH 225C. Not a student rating: this is what the grades were.
In the A range
100%
of the 46 letter grades
D, F or W
0.0%
of every letter grade awarded, plus withdrawals
Taken pass/no pass
0%
nobody in the record took it pass/no pass
The registrar's own records: 46 grades over 3 terms, Fall 2021 to Fall 2025. Every instructor is pooled here.
What is inside that record
No summer session is in that record.
The table below splits them, and term averages across those 3 terms ran 3.90 to 4.00.
Historical grades for all professors, across recorded terms. The course summary above includes all professors.
- A+ 4 · 8.7%
- A 34 · 73.9%
- A- 8 · 17.4%
- S 1 of 47
Percentages are of the 46 letter grades. Grey bars are non-letter outcomes: satisfactory (S).
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.
By instructor
| Instructor | Predicted GPA | Raw | n | Terms | A range | Workload | Winter 2026 |
|---|---|---|---|---|---|---|---|
| LIU, KEFENG reviews ↗ | 3.85 | 3.90 | 18 · | 1 | 100% | - | not teaching it |
| XU, ZHOULI reviews ↗ | 3.89 | 3.96 | 17 · | 1 | 100% | - | not teaching it |
| SARKAR, SUCHARIT reviews ↗ | 3.88 | 4.00 | 11 · | 1 | 100% | - | 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
dibs has not read a class page for MATH 225C in any term it holds, so it cannot say what comes before it.
Counted in courses rather than quarters: dibs does not know which of them a department lets you take together.
In Winters
Has not run in Winter in the 3 Winters dibs holds records for, back to Spring 2022. That is 3 years of grade records rather than the course catalog, so it says what has happened and not what the department will do next.
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. Homotopy theory: fundamental group, covering spaces, Van Kampen’s theorem. Homology theory: singular homology, simplicial homology, homotopy invariance, relative homology, excision and Mayer-Vietoris, functoriality, relationship to the fundamental group, calculations with cellular complexes (CW complexes). Cohomology theory: singular cohomology, universal coefficient theorem, cup products. S/U or letter grading.
Sections in Winter 2026
From the people who took it
Student reviews
What taking MATH 225C 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.