Graded S/U only, so there is no average to report.
Grades with this instructor
You are looking at Fall 2025.
That term is over, so these are last term's numbers rather than seats you can take.
dibs holds 1,964 sections for Fall 2025, read about 2 months ago. Separately, it has finished 527 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
BILLS, TIERRA SUZAN
107 letter grades across 6 courses, Fall 2023 to Fall 2025. Course by course the average runs 3.61 to 3.91, so read the course, not the person.
Teaching in Fall 2025
Seat counts as of . That term is over, so nothing has moved since.
Taught in earlier terms
PUB AFF 155 Economics and Equity in Transportation Systems and Policies
3.78predicted, this instructor
A range 85% · 0% D, F or W · 3.78 raw · 33 grades · 1 term
Grades with this instructorC&EE 298 Seminar: Engineering
3.91predicted, this instructor
A range 95% · 0% D, F or W · 3.93 raw · 22 grades · 2 terms
Grades with this instructorPUB AFF 191A Variable Topics Seminar: Public Affairs: Causes, Consequences, and Responses to Spatial Inequality
3.87predicted, this instructor
A range 90% · 0% D, F or W · 3.88 raw · 21 grades · 1 term
Grades with this instructorC&EE M287 Travel Behavior Analysis
3.61predicted, this instructor
A range 55% · 0% D, F or W · 3.63 raw · 11 grades · 1 term ·
Grades with this instructorURBN PL M253 Travel Behavior Analysis
3.71predicted, this instructor
A range 70% · 0% D, F or W · 3.67 raw · 10 grades · 1 term ·
Grades with this instructorC&EE C184 Transportation System and Policy Outcomes
3.77predicted, this instructor
A range 90% · 0% D, F or W · 3.87 raw · 10 grades · 1 term ·
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.