PSTAT · UC Santa BarbaraHistorical grades
PSTAT 172A
A clearer picture of the classes ahead.
15 published recordsWinter 2012 — Winter 2026
Look a little closer
All available historyThe grade picture.
2.56Average GPA weighted · out of 4.00
20.2%A-range grades A+, A, and A−
11.0%D / F grades D+, D, D−, and F
1,002Letter grades 15 published records
Grade distribution
All instructors · All quartersPlus and minus grades are grouped together. 1 reported P/NP or S/U grades are excluded from GPA and percentages. Counts reflect grades before optional grading conversions in the original source.
Quarter by quarter
15 quarters
| Quarter | Average GPA | A range | D / F | Letter grades |
|---|---|---|---|---|
| Winter 2026 | 2.86 | 34.2% | 7.9% | 38 |
| Winter 2025 | 2.77 | 38.8% | 16.3% | 49 |
| Winter 2024 | 3.24 | 56.7% | 8.3% | 60 |
| Winter 2023 | 2.26 | 18.6% | 27.9% | 43 |
| Winter 2022 | 2.78 | 26.7% | 3.3% | 60 |
| Winter 2021 | 2.65 | 18.4% | 6.9% | 87 |
| Winter 2020 | 2.76 | 16.7% | 4.2% | 96 |
| Winter 2019 | 2.42 | 13.1% | 10.1% | 99 |
| Winter 2018 | 2.61 | 17.7% | 5.2% | 96 |
| Winter 2017 | 2.43 | 15.1% | 7.5% | 93 |
| Winter 2016 | 2.49 | 13.8% | 11.3% | 80 |
| Winter 2015 | 2.19 | 10.8% | 17.6% | 74 |
| Winter 2014 | 2.42 | 16.7% | 16.7% | 54 |
| Winter 2013 | 2.28 | 10.9% | 17.4% | 46 |
| Winter 2012 | 2.02 | 11.1% | 33.3% | 27 |
Keep exploring
All PSTAT courses ↗More in PSTAT.
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 ↗