Head-to-head comparison
California State University-Fullerton vs California Polytechnic State University-San Luis Obispo: which has better ROI?
Option A Fullerton, CA
California State University-Fullerton
- Net price / year
- $6,555
- Earnings, 10 years
- $62,951
- Payback
- 1.8 yrs
Option B San Luis Obispo, CA
California Polytechnic State University-San Luis Obispo
- Net price / year
- $16,665
- Earnings, 10 years
- $90,768
- Payback
- 1.6 yrs
California Polytechnic State University-San Luis Obispo has the better ROI: it clears its 4-year net cost of $66,660 in 1.6 years versus 1.8 years at California State University-Fullerton, on median earnings of $90,768 vs $62,951 ten years out. (Scorecard, 2026 · our math.)
| Measure | California State University-Fullerton | California Polytechnic State University-San Luis Obispo |
|---|---|---|
| Net price / yr | $6,555 | $16,665 |
| Total net cost | $26,220 | $66,660 |
| Median earnings, 10 yrs | $62,951 | $90,768 |
| Median debt | $13,750 | $18,500 |
| Payback | 1.8 yrs | 1.6 yrs |
| 20-year net return | $265,600 | $781,500 |
College Scorecard (2026), institution-level · payback and returns are our math. Figures blend all majors.
The short answer
Which is cheaper, California State University-Fullerton or California Polytechnic State University-San Luis Obispo?
California State University-Fullerton, at $6,555 a year after aid versus $16,665 — a gap of $10,110 a year, or $40,440 across the full degree. These are net prices after grants and scholarships, not sticker prices, so they reflect what an aided student pays.
The short answer
Do California State University-Fullerton or California Polytechnic State University-San Luis Obispo graduates earn more?
California Polytechnic State University-San Luis Obispo graduates report a median $90,768 ten years after entry, $27,817 more than the $62,951 at California State University-Fullerton. Both are institution-wide medians from federal tax records, so a high-paying major at the lower school can beat the average at the higher one.
The short answer
Which leaves students with less debt, California State University-Fullerton or California Polytechnic State University-San Luis Obispo?
California State University-Fullerton: its completers carry a median $13,750 in federal loans versus $18,500 at California Polytechnic State University-San Luis Obispo, a difference of $4,750. The figure counts students who finished; it excludes private loans and anyone who left before graduating.
The short answer
Which graduates more of its students?
86% of students finish at California Polytechnic State University-San Luis Obispo, against 70% at California State University-Fullerton. Completion matters to the ROI arithmetic because a degree that is never finished still carries its cost and its debt, but earns none of the graduate premium above the $48,360 high-school baseline.