No grades on record.
Grades with this instructor
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
GRETHER, GREGORY F
1,024 letter grades across 4 courses, Fall 2021 to Fall 2025. Course by course the average runs 3.14 to 3.97, so read the course, not the person.
Teaching in Winter 2026
Seat counts as of . That term is over, so nothing has moved since.
Taught in earlier terms
EE BIOL 100 Introduction to Ecology and Behavior
3.14predicted, this instructor
A range 42% · 5% D, F or W · 3.14 raw · 685 grades · 3 terms
Grades with this instructorEE BIOL 100L Introduction to Ecology and Behavior Laboratory
3.80predicted, this instructor
A range 86% · 0% D, F or W · 3.80 raw · 288 grades · 3 terms
Grades with this instructorEE BIOL 132 Field Behavioral Ecology
3.86predicted, this instructor
A range 94% · 0% D, F or W · 3.93 raw · 32 grades · 2 terms
Grades with this instructorEE BIOL 297 Selected Topics in Ecology and Evolutionary Biology
3.97predicted, this instructor
A range 100% · 0% D, F or W · 4.00 raw · 19 grades · 3 terms ·
Grades with this instructorPass/no pass only, so there is no average to report.
Grades with this instructorRaw is the average actually awarded. Predicted pulls it toward the course average, and then toward the department's, in proportion to how few grades there are, so twelve students cannot outvote six terms. A range is the share who got an A minus or better. D, F or W is the share who finished with a D or an F, or withdrew. There is no single average for this person: one figure over every course would be weighted by students, not by course, and the largest lecture would stand for all of them.
What students say
dibs measures outcomes: grades, seats, how fast a class fills. For what a class is like to sit in, BruinWalk has the reviews.