Head-to-head comparison
California State University-Fullerton vs San Diego State University: 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 Diego, CA
San Diego State University
- Net price / year
- $15,364
- Earnings, 10 years
- $64,909
- Payback
- 3.7 yrs
California State University-Fullerton has the better ROI: it clears its 4-year net cost of $26,220 in 1.8 years versus 3.7 years at San Diego State University, on median earnings of $62,951 vs $64,909 ten years out. (Scorecard, 2026 · our math.)
| Measure | California State University-Fullerton | San Diego State University |
|---|---|---|
| Net price / yr | $6,555 | $15,364 |
| Total net cost | $26,220 | $61,456 |
| Median earnings, 10 yrs | $62,951 | $64,909 |
| Median debt | $13,750 | $15,000 |
| Payback | 1.8 yrs | 3.7 yrs |
| 20-year net return | $265,600 | $269,524 |
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 San Diego State University?
California State University-Fullerton, at $6,555 a year after aid versus $15,364 — a gap of $8,809 a year, or $35,236 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 San Diego State University graduates earn more?
San Diego State University graduates report a median $64,909 ten years after entry, $1,958 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 San Diego State University?
California State University-Fullerton: its completers carry a median $13,750 in federal loans versus $15,000 at San Diego State University, a difference of $1,250. 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?
76% of students finish at San Diego State University, 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.