EE BIOL 169
Biology of Bats: The True Superheroes
Grades
3.55
Average grade awarded in EE BIOL 169. Not a student rating: this is what the grades were.
In the A range
67%
of the 190 letter grades
D, F or W
1.1%
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: 190 grades over 2 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 2 terms ran 3.54 to 3.57.
Historical grades for all professors, across recorded terms. The course summary above includes all professors.
- A+ 22 · 11.6%
- A 62 · 32.6%
- A- 43 · 22.6%
- B+ 24 · 12.6%
- B 18 · 9.5%
- B- 8 · 4.2%
- C+ 4 · 2.1%
- C 7 · 3.7%
- D 2 · 1.1%
Percentages are of the 190 letter grades. Grey bars are non-letter outcomes.
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 |
|---|---|---|---|---|---|---|---|
| SEARS, KAREN ELIZABETH reviews ↗ | 3.55 | 3.55 | 190 | 2 | 67% | - | 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 EE BIOL 169 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.
From the registrar's catalog
Lecture, three hours; discussion, one hour. Enforced requisite: Life Sciences 7B. Comprising 20 percent of all mammals and inhabiting all but one continent, bats are the only mammals capable of powered flight. Bats can also echolocate, hibernate, live longer than humans, and harbor viruses but not get sick. This allows bats to be reservoirs for many viruses that can cause zoonotic diseases in humans, including Ebola and SARS-CoV-2, the virus that causes COVID-19. Exploration of evolution, anatomy, physiology, immunology, longevity, and conservation of bats. Focus on how scientists use bats as model system to address key questions in ecology, evolution, and human health. Letter grading.
Sections in Winter 2026
From the people who took it
Student reviews
What taking EE BIOL 169 was like: the work, the teaching, and what students wish they’d known.
Your experience could be the first.
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