| | Tustin, CA | San Marcos, CA | United States |
| Expend. per Student | $15,277 | $16,358 | $15,905 |
| Educ. Expend. per Student | $12,911 | $13,161 | $13,142 |
| Instr. Expend. per Student | $8,037 | $8,084 | $7,999 |
| Pupil/Teacher Ratio | 23.21 | 22.65 | 16.23 |
| Students per Librarian | 16383 | 18744 | 4573 |
| Students per Counselor | 595 | 513 | 530 |
| Grade School Educ. | 6.6% | 6.8% | 4.8% |
| Some High School Educ. | 5.2% | 5.4% | 6.3% |
| High School Educ. | 88.2% | 87.8% | 88.9% |
| Some College Educ. | 18.8% | 20.5% | 20.0% |
| 2 yr College Grad. | 7.0% | 8.4% | 8.7% |
| 4 yr College Grad. | 45.5% | 40.9% | 33.7% |
| Masters Grad. | 13.8% | 10.2% | 9.3% |
| Professional Degree | 3.4% | 1.9% | 2.2% |
| Doctorate Degree | 1.7% | 1.7% | 1.5% |