Hardest BIEB classes at UCSD

Ranked by average GPA from official grade distributions. Only courses with at least 100 graded students.

1. BIEB 126: Plant Ecology Average GPA 2.79, 585 students
2. BIEB 128: Insect Diversity Average GPA 2.89, 340 students
3. BIEB 134: Intro/biological Oceanography Average GPA 3.02, 479 students
4. BIEB 154: Evolutionary Inquiry Average GPA 3.03, 358 students
5. BIEB 156: Population Genetics Average GPA 3.03, 344 students
6. BIEB 182: Biology of Global Change Average GPA 3.09, 181 students
7. BIEB 174: Ecosystems and Global Change Average GPA 3.13, 1,431 students
8. BIEB 102: Intro Eclgy/Organisms&Habitats Average GPA 3.14, 2,241 students
9. BIEB 140: Biodiversity Average GPA 3.20, 1,201 students
10. BIEB 166: Animal Behavior&communication Average GPA 3.20, 1,030 students
11. BIEB 152: Evol of Infectious Diseases Average GPA 3.22, 4,514 students
12. BIEB 150: Evolution Average GPA 3.22, 2,146 students
13. BIEB 148: Disease Ecology Average GPA 3.28, 547 students
14. BIEB 143: Comp Modeling in Evol/ecol Average GPA 3.39, 118 students
15. BIEB 123: Molculr Mthd/evol & Ecol Lab Average GPA 3.55, 194 students
16. BIEB 146: Genome Diversity and Dynamics Average GPA 3.61, 5,003 students
17. BIEB 135: Aquatic Ecology Lab Average GPA 3.65, 230 students
18. BIEB 164: Behav Ecology & Conservation Average GPA 3.67, 239 students
19. BIEB 176: Bio of Conservation/human Pred Average GPA 3.69, 336 students
20. BIEB 130: Marine Conservation Biology Average GPA 3.83, 1,624 students
21. BIEB 121: Ecology Laboratory Average GPA 3.83, 826 students

See also: Easiest classes, UCSD course catalog, BIEB course catalog.