First calculate your 3 UCGPA’s. https://rogerhub.com/gpa-calculator-uc/
UC capped weighted = CSU capped weighted
Using your Capped weighted UC GPA, you want to be at or above the averages to be competitive for STEM.
Test scores are optional however a competitive SAT/ACT and subject tests will help your chances. Apply widely since UC’s tend to be unpredictable.
2019 Freshman admit rates for UC GPA of 3.80-4.19 capped weighted and not major specific:
UCB: 12%
UCLA: 7%
UCSD: 33%
UCSB: 32%
UCD: 47%
UCI: 35%
UCSC: 72%
UCR: 87%
UCM: 96%
2019 Freshman admit rates for UC GPA of 4.20 or above capped weighted and not major specific:
UCB: 38%
UCLA: 35%
UCSD: 71%
UCSB: 73%
UCD: 84%
UCI: 55%
UCSC: 85%
UCR: 97%
UCM: 98%
2019 UC capped weighted GPA averages along with 25th-75th percentile range:
UCB: 4.23 (4.15-4.30)
UCLA: 4.25 (4.18-4.32)
UCSD: 4.16 (4.03-4.28)
UCSB: 4.16 (4.04-4.28)
UCI: 4.13 (4.00-4.25)
UCD: 4.13 (4.00-4.26)
UCSC: 3.96 (3.76-4.16)
UCR: 3.90 (3.69-4.11)
UCM: 3.73 (3.45-4.00)
2019 Data:
25th - 75th percentiles for SAT totals:
UCB: 1340-1540
UCLA: 1330-1550
UCSD: 1300-1520
UCSB: 1280-1520
UCD: 1230-1490
UCI: 1250-1510
UCSC: 1200-1450
UCR: 1130-1400
UCM: 1020-1290
CSU’s admit by major and only a few campuses will consider an alternate major so make sure you narrow down your interests if you plan to apply to any Cal states.