CHEM 20L
General Chemistry Laboratory
Grades
3.49
Average grade awarded in CHEM 20L. Not a student rating: this is what the grades were.
In the A range
60%
of the 2,707 letter grades
D, F or W
0.6%
of every letter grade awarded, plus withdrawals
Taken pass/no pass
<1%
0 of 1 student passed
The registrar's own records: 2,707 grades over 9 terms, Fall 2021 to Fall 2025. Every instructor is pooled here.
What is inside that record
1 of those terms is a summer session, and summer sessions are counted here.
The table below splits them, and term averages across those 9 terms ran 3.26 to 3.80.
Historical grades for all professors, across recorded terms. The course summary above includes all professors.
- A+ 1 · 0.0%
- A 1,453 · 53.7%
- A- 165 · 6.1%
- B+ 124 · 4.6%
- B 664 · 24.5%
- B- 57 · 2.1%
- C+ 45 · 1.7%
- C 171 · 6.3%
- C- 10 · 0.4%
- D+ 1 · 0.0%
- D 10 · 0.4%
- D- 1 · 0.0%
- F 5 · 0.2%
- NP 1 of 2,714
- I 6 of 2,714
Percentages are of the 2,707 letter grades. Grey bars are non-letter outcomes: no-passes (NP) and incompletes (I).
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 | Spring 2026 |
|---|---|---|---|---|---|---|---|
| PANG, JOHNNY reviews ↗ | 3.49 | 3.49 | 1,626 | 4 | 59% | - | not teaching it |
| PANG, JOHNNY W reviews ↗ | 3.52 | 3.52 | 467 | 1 | 63% | - | not teaching it |
| RUSSELL, A A reviews ↗ | 3.45 | 3.45 | 390 | 2 | 55% | heavy | not teaching it |
| HENARY, MAHER M reviews ↗ | 3.52 | 3.52 | 197 | 1 | 61% | average | not teaching it |
| ANDERSON, MACKENZIE BABETTA reviews ↗ | 3.28 | 3.26 | 193 | 1 | 40% | - | not teaching it |
| DEIFEL, NICHOLAS reviews ↗ | 3.68 | 3.80 | 27 | 1 | 96% | - | 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 read this course’s reviews and none of them say what kind of work it sets, so dibs has nothing to show rather than a guess. Read from 84 reviews 26 days ago. That is the reviewers being silent, and not a course that sets no work.
What comes first
dibs has not read a class page for CHEM 20L 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.
In Springs
Ran in 4 of the last 4 Springs.
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, one hour; laboratory, three hours. Enforced requisite: course 14A or 20A with grade of C- or better. Enforced corequisite: course 14B or 20B. Use of balance, volumetric techniques, volumetric and potentiometric analysis; Beer's law, applications for environmental analysis and materials science. P/NP or letter grading.
Sections in Spring 2026
From the people who took it
Student reviews
What taking CHEM 20L was like: the work, the teaching, and what students wish they’d known.
Your experience could be the first.
No student reviews are available to read on dibs for this course yet. Took it? Tell the next person what helped, what was hard, and how you spent your time.
Looking for more perspectives?
External reviews are separate and do not count toward the dibs rating.