GEOG 109
Biogeography of Plant and Animal Invasions
Grades
3.32
Average grade awarded in GEOG 109. Not a student rating: this is what the grades were.
In the A range
54%
of the 112 letter grades
D, F or W
2.7%
of every letter grade awarded, plus withdrawals
Taken pass/no pass
2%
1 of 2 students passed
The registrar's own records: 112 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 3.05 to 3.58.
Historical grades for all professors, across recorded terms. The course summary above includes all professors.
- A+ 2 · 1.8%
- A 38 · 33.9%
- A- 20 · 17.9%
- B+ 11 · 9.8%
- B 18 · 16.1%
- B- 6 · 5.4%
- C+ 8 · 7.1%
- C 5 · 4.5%
- C- 1 · 0.9%
- D 1 · 0.9%
- F 2 · 1.8%
- P 1 of 114
- NP 1 of 114
Percentages are of the 112 letter grades. Grey bars are non-letter outcomes: passes (P) and no-passes (NP).
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 | Fall 2025 |
|---|---|---|---|---|---|---|---|
| ILLES, LILIA I reviews ↗ | 3.32 | 3.32 | 112 | 2 | 54% | - | 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
The chain dibs can see is 1 course long before GEOG 109. Read from Fall 2026, because dibs has not read a class page for GEOG 109 in Fall 2025 and a department can change what it requires. dibs has read a class page for every course in it.
Counted in courses rather than quarters: dibs does not know which of them a department lets you take together.
In Falls
Ran in 2 of the last 4 Falls, so it turns up in Fall sometimes rather than dependably. dibs has no record of it in any quarter since Fall 2024.
From the terms dibs holds, which start in Fall 2021 and exclude summer. A department can run a course in a quarter it never has before.
From the registrar's catalog
Lecture, three hours; reading period, one hour. Requisite: course 1 or 2 or 5. Examination of theories and examples of invasion of new environments by plants and animals introduced through natural processes or by human activity. P/NP or letter grading.
Sections in Fall 2025
From the people who took it
Student reviews
What taking GEOG 109 was like: the work, the teaching, and what students wish they’d known.
Your experience could be the first.
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