| | Ronkonkoma, NY | Selden, 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. | 1.9% | 3.0% | 4.8% |
| Some High School Educ. | 1.6% | 3.6% | 6.3% |
| High School Educ. | 96.5% | 93.4% | 88.9% |
| Some College Educ. | 18.7% | 20.5% | 20.0% |
| 2 yr College Grad. | 10.9% | 10.4% | 8.7% |
| 4 yr College Grad. | 35.7% | 26.5% | 33.7% |
| Masters Grad. | 10.8% | 8.4% | 9.3% |
| Professional Degree | 5.3% | 1.5% | 2.2% |
| Doctorate Degree | 0.3% | 0.3% | 1.5% |