CHEM · UC Santa BarbaraHistorical grades
CHEM 143
A clearer picture of the classes ahead.
13 published recordsFall 2009 — Winter 2026
Look a little closer
All available historyThe grade picture.
3.01Average GPA weighted · out of 4.00
34.6%A-range grades A+, A, and A−
6.8%D / F grades D+, D, D−, and F
191Letter grades 13 published records
Grade distribution
All instructors · All quartersPlus and minus grades are grouped together. Counts reflect grades before optional grading conversions in the original source.
Quarter by quarter
13 quarters
| Quarter | Average GPA | A range | D / F | Letter grades |
|---|---|---|---|---|
| Winter 2026 | 3.11 | 36.8% | 5.3% | 19 |
| Fall 2024 | 3.09 | 33.3% | 4.2% | 24 |
| Winter 2024 | 2.76 | 35.7% | 14.3% | 14 |
| Winter 2023 | 3.03 | 50.0% | 12.5% | 16 |
| Fall 2021 | 2.58 | 14.3% | 7.1% | 14 |
| Fall 2019 | 2.98 | 26.9% | 7.7% | 26 |
| Fall 2018 | 3.32 | 50.0% | 0.0% | 12 |
| Winter 2016 | 3.16 | 42.9% | 7.1% | 14 |
| Fall 2014 | 3.17 | 46.7% | 6.7% | 15 |
| Fall 2013 | 2.93 | 30.0% | 10.0% | 10 |
| Fall 2011 | 2.65 | 12.5% | 12.5% | 8 |
| Fall 2010 | 3.12 | 25.0% | 0.0% | 8 |
| Fall 2009 | 3.06 | 36.4% | 0.0% | 11 |
Keep exploring
All CHEM courses ↗More in CHEM.
About the numbers
Historical grade data from the Daily Nexus, obtained from UCSB’s Registrar through public records requests. Available records extend through Winter 2026. Course history is not a list of current offerings. Dataset retrieved .
GPA and grade percentages use letter grades only, weighted by the number of grades. A range includes A+, A, and A−. Repeated enrollments count separately. Past grades don’t predict your result or a course’s workload. How to read grade distributions ↗