| | Killingly, CT | Portland, CT | United States |
| Expend. per Student | $24,734 | $25,271 | $15,905 |
| Educ. Expend. per Student | $20,621 | $22,678 | $13,142 |
| Instr. Expend. per Student | $11,348 | $13,520 | $7,999 |
| Pupil/Teacher Ratio | 12.35 | 11.52 | 16.23 |
| Students per Librarian | 518 | 318 | 4573 |
| Students per Counselor | 288 | 315 | 530 |
| Grade School Educ. | 3.1% | 1.6% | 4.8% |
| Some High School Educ. | 8.8% | 5.0% | 6.3% |
| High School Educ. | 88.2% | 93.4% | 88.9% |
| Some College Educ. | 18.9% | 16.0% | 20.0% |
| 2 yr College Grad. | 10.7% | 9.2% | 8.7% |
| 4 yr College Grad. | 22.5% | 46.9% | 33.7% |
| Masters Grad. | 8.7% | 11.6% | 9.3% |
| Professional Degree | 0.4% | 2.8% | 2.2% |
| Doctorate Degree | 0.7% | 2.4% | 1.5% |