| | Riverhead, NY | Commack, NY | United States |
| Expend. per Student | $30,219 | $30,219 | $15,905 |
| Educ. Expend. per Student | $26,965 | $26,965 | $13,142 |
| Instr. Expend. per Student | $18,018 | $18,018 | $7,999 |
| Pupil/Teacher Ratio | 12.27 | 12.27 | 16.23 |
| Students per Librarian | 1114 | 1114 | 4573 |
| Students per Counselor | 356 | 356 | 530 |
| Grade School Educ. | 7.4% | 1.4% | 4.8% |
| Some High School Educ. | 5.0% | 1.4% | 6.3% |
| High School Educ. | 87.6% | 97.2% | 88.9% |
| Some College Educ. | 16.3% | 14.1% | 20.0% |
| 2 yr College Grad. | 9.2% | 9.5% | 8.7% |
| 4 yr College Grad. | 30.1% | 56.4% | 33.7% |
| Masters Grad. | 10.0% | 20.0% | 9.3% |
| Professional Degree | 2.7% | 4.0% | 2.2% |
| Doctorate Degree | 1.3% | 2.0% | 1.5% |