CLUSTER 70B / PETIGURA, ERIK A

Evolution of Cosmos and Life

How CLUSTER 70B grades when PETIGURA, ERIK A teaches it. CLUSTER 70B, every instructor PETIGURA, ERIK A, every course

Grades, this instructor

3.80adjusted historical GPA, this instructor

532 letter grades across 2 terms, Winter 2024 to Winter 2025. The course pools every instructor at 3.72 over 948 letter grades.

Raw average: 3.80; The mean of this instructor's recorded letter grades in this course.
In the A range: 88.2%; A+, A and A minus out of 532 letter grades.
D, F or W: 0.9%; D-range and F grades plus withdrawals, divided by letter grades plus withdrawals.
Taken pass/no pass: 0%; No pass/no-pass outcomes are recorded.

Some of these grades are shared. 532 letter grades in 2 sections also count under FRISCIA, ANTHONY RAYMOND, JEWITT, DAVID CLIFFORD, ROBIN, AMANDA NICOLE, and SUPRIYA, K. The source does not split grades between co-teachers. Do not add instructor totals together.

Grade distribution

A+93 / 17.5%
A272 / 51.1%
A-104 / 19.5%
B+35 / 6.6%
B12 / 2.3%
B-5 / 0.9%
C+3 / 0.6%
C3 / 0.6%
C-0 / 0%
D+0 / 0%
D0 / 0%
D-1 / 0.2%
F4 / 0.8%
I2 of 534

Percentages are of the 532 letter grades. Grey bars are non-letter outcomes: 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, 3.72.

One recorded instructorCo-taught, grades shared

Winter 20243.76247 letter grades; 247 shared with FRISCIA, ANTHONY RAYMOND, JEWITT, DAVID CLIFFORD, and ROBIN, AMANDA NICOLE.

Winter 20253.84285 letter grades; 285 shared with FRISCIA, ANTHONY RAYMOND, JEWITT, DAVID CLIFFORD, and SUPRIYA, K.

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 Fall 2026

No confirmed sections are available here. The selected term may not have been fully read.

Every CLUSTER 70B 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 PETIGURA, ERIK A in CLUSTER 70B