You are looking at Winter 2026. That term is over, so these are last term's numbers rather than seats you can take. dibs holds 1,472 sections for Winter 2026, read about 2 months ago. Separately, it has finished 195 of the 3,617 courses on its current checking list for this term. Future-term coverage is incomplete, so a course with nothing here may simply not have been reached yet. Back to Fall 2026

MATH 31AL / XIONG, HAOREN

Differential and Integral Calculus Laboratory

How MATH 31AL grades when XIONG, HAOREN teaches it. MATH 31AL, every instructor XIONG, HAOREN, every course

Grades, this instructor

2.99adjusted historical GPA, this instructor

201 letter grades across 1 term, Winter 2023. The course pools every instructor at 3.00 over 1,577 letter grades.

Raw average: 2.99; The mean of this instructor's recorded letter grades in this course.
In the A range: 42.3%; A+, A and A minus out of 201 letter grades.
D, F or W: 7.5%; D-range and F grades plus withdrawals, divided by letter grades plus withdrawals.
Taken pass/no pass: 1%; 0 of 2 pass/no-pass outcomes passed. Share is of letter, P/NP and S/U outcomes.

Grade distribution

A+5 / 2.5%
A50 / 24.9%
A-30 / 14.9%
B+32 / 15.9%
B16 / 8%
B-7 / 3.5%
C+11 / 5.5%
C20 / 10%
C-15 / 7.5%
D+0 / 0%
D6 / 3%
D-0 / 0%
F9 / 4.5%
I1 of 204
NP2 of 204

Percentages are of the 201 letter grades. Grey bars are non-letter outcomes: no-passes (NP) and incompletes (I). They are excluded from GPA.

Term by term

Raw averages for the terms in this record. A missing term does not establish that this instructor did not teach it. Summer sessions are included when present.

Dashed line: course average across all instructors, 3.00.

One recorded instructorCo-taught, grades shared

Winter 20232.99201 letter grades.

Is one term a guide to the next?

Across the measured corpus, the same course and instructor's term averages were strongly correlated, including terms several years apart. That is why the adjustment does not weight recent terms more heavily. This is a dataset-wide pattern, not a promise about this instructor's next class.

Teaching it in Winter 2026

This term has ended. Section counts below are historical readings, not current availability.

No sections are confirmed under this instructor's record in the course listing dibs read for Winter 2026.

Every MATH 31AL section and instructor

Reading these figures

Raw is the mean of the recorded letter grades. The adjusted historical GPA pulls an instructor's average toward the course's adjusted average, which itself uses a department prior. It is a comparison aid, not a calibrated prediction or a student rating. Small samples carry more uncertainty. All recorded instructor roles are included, and a section is counted only once for this instructor. Grades cannot establish workload or explain why outcomes differed.

What students say

dibs measures outcomes. For students' experiences of the class, BruinWalk has reviews.

Reviews for XIONG, HAOREN in MATH 31AL