| | Arlington, MA | Chelsea, MA | United States |
| Expend. per Student | $23,560 | $29,396 | $15,905 |
| Educ. Expend. per Student | $19,196 | $23,918 | $13,142 |
| Instr. Expend. per Student | $12,141 | $13,967 | $7,999 |
| Pupil/Teacher Ratio | 11.99 | 11.25 | 16.23 |
| Students per Librarian | 354 | 717 | 4573 |
| Students per Counselor | 331 | 567 | 530 |
| Grade School Educ. | 1.3% | 22.5% | 4.8% |
| Some High School Educ. | 1.4% | 9.6% | 6.3% |
| High School Educ. | 97.3% | 67.9% | 88.9% |
| Some College Educ. | 8.5% | 12.8% | 20.0% |
| 2 yr College Grad. | 4.0% | 5.2% | 8.7% |
| 4 yr College Grad. | 74.2% | 20.8% | 33.7% |
| Masters Grad. | 28.6% | 5.2% | 9.3% |
| Professional Degree | 5.9% | 1.4% | 2.2% |
| Doctorate Degree | 8.3% | 0.6% | 1.5% |