Course record PHYSICS

PHYSICS 20B

Cosmology: Humanity's Place in the Universe

University of California-Irvine

3,201 grades21 sections6 professors
Grades: 2015–2025
Flunk Score30/100
Below average

Professors 6 of 6

A. Cooray 830 grades · 5 terms · 2020–2025 3.76GPA
87.1% A
8.1% B
2.8% C
0.4% D
1.7% F

830 letter grades · 5 sections · 2020–2025

Compare with the course
Cooray vs. the course average
A +27.2
B −17.4
C −7.7
D −2.0
F −0.1

Difference in percentage points.

Each term against the course average
Winter 2020Spring 2025

0.1% withdrew · 1 of 831 enrolled.

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A. Ralston 155 grades · 1 term · 2024 3.69GPA
82.6% A
10.3% B
4.5% C
0.0% D
2.6% F

155 letter grades · 1 section · 2024

Compare with the course
Ralston vs. the course average
A +22.7
B −15.2
C −6.0
D −2.3
F +0.8

Difference in percentage points.

1.3% withdrew · 2 of 157 enrolled.

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J. Bullock 757 grades · 3 terms · 2015–2019 3.36GPA
54.4% A
34.6% B
7.5% C
2.6% D
0.8% F

757 letter grades · 3 sections · 2015–2019

Compare with the course
Bullock vs. the course average
A −5.5
B +9.1
C −3.0
D +0.3
F −1.0

Difference in percentage points.

0.0% withdrew · 0 of 757 enrolled.

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D. Buote 31 grades · 1 term · 2024 3.15GPA
41.9% A
32.3% B
25.8% C
0.0% D
0.0% F

31 letter grades · 1 section · 2024

Compare with the course
Buote vs. the course average
A −18.0
B +6.8
C +15.3
D −2.3
F −1.7

Difference in percentage points.

3.1% withdrew · 1 of 32 enrolled.

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M. Cooper 1,412 grades · 10 terms · 2016–2025 3.11GPA
44.5% A
32.5% B
17.0% C
3.7% D
2.3% F

1,412 letter grades · 10 sections · 2016–2025

Compare with the course
Cooper vs. the course average
A −15.4
B +7.0
C +6.5
D +1.3
F +0.5

Difference in percentage points.

Each term against the course average
Winter 2016Winter 2025

0.6% withdrew · 8 of 1,420 enrolled.

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N. Timmons 16 grades · 1 term · 2019 · Limited sample 3.68GPA
81.3% A
12.5% B
6.3% C
0.0% D
0.0% F

16 letter grades · 1 section · 2019 · Limited sample

0.0% withdrew · 0 of 16 enrolled.

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