| | Lancaster, NY | Islip Terrace, NY | United States |
| Expend. per Student | $23,413 | $30,219 | $15,905 |
| Educ. Expend. per Student | $19,132 | $26,965 | $13,142 |
| Instr. Expend. per Student | $12,129 | $18,018 | $7,999 |
| Pupil/Teacher Ratio | 11.41 | 12.27 | 16.23 |
| Students per Librarian | 868 | 1114 | 4573 |
| Students per Counselor | 319 | 356 | 530 |
| Grade School Educ. | 1.5% | 5.2% | 4.8% |
| Some High School Educ. | 3.2% | 2.0% | 6.3% |
| High School Educ. | 95.3% | 92.8% | 88.9% |
| Some College Educ. | 17.5% | 18.7% | 20.0% |
| 2 yr College Grad. | 14.4% | 11.2% | 8.7% |
| 4 yr College Grad. | 35.4% | 30.1% | 33.7% |
| Masters Grad. | 13.0% | 12.2% | 9.3% |
| Professional Degree | 1.7% | 2.6% | 2.2% |
| Doctorate Degree | 1.1% | 0.3% | 1.5% |