| | Preston, CT | Salem, CT | United States |
| Expend. per Student | $26,209 | $26,209 | $15,905 |
| Educ. Expend. per Student | $21,083 | $21,083 | $13,142 |
| Instr. Expend. per Student | $12,420 | $12,420 | $7,999 |
| Pupil/Teacher Ratio | 11.7 | 11.7 | 16.23 |
| Students per Librarian | 403 | 403 | 4573 |
| Students per Counselor | 331 | 331 | 530 |
| Grade School Educ. | 1.6% | 0.7% | 4.8% |
| Some High School Educ. | 4.4% | 1.0% | 6.3% |
| High School Educ. | 94.0% | 98.3% | 88.9% |
| Some College Educ. | 25.9% | 14.2% | 20.0% |
| 2 yr College Grad. | 16.3% | 8.5% | 8.7% |
| 4 yr College Grad. | 24.4% | 56.7% | 33.7% |
| Masters Grad. | 9.1% | 17.5% | 9.3% |
| Professional Degree | 1.3% | 3.8% | 2.2% |
| Doctorate Degree | 1.4% | 3.1% | 1.5% |