| Colchester - Educational Attainment | FIPS Code=07025 |
| 1970 | 1980 | 1990 | |
| Per Cent of Individuals Ages 25 and Older without a High School Diploma | 37.70 | 21.40 | 10.20 |
| Per Cent of Individuals Ages 25 and Older with a High School Diploma or Equivalent | 33.12 | 40.60 | 34.90 |
| Per Cent of Individuals Ages 25 and Older with a Bachelor's Degree or Some College | 14.94 | 18.60 | 34.90 |
| Per Cent of Individuals Ages 25 and Older with a Doctorate, Professional or Master's Degree | 14.23 | 19.50 | 28.30 |