| Cambridge - Educational Attainment | FIPS Code=15010 |
| 1970 | 1980 | 1990 | |
| Per Cent of Individuals Ages 25 and Older without a High School Diploma | 45.44 | 20.90 | 12.60 |
| Per Cent of Individuals Ages 25 and Older with a High School Diploma or Equivalent | 37.74 | 43.40 | 37.10 |
| Per Cent of Individuals Ages 25 and Older with a Bachelor's Degree or Some College | 12.25 | 17.00 | 24.00 |
| Per Cent of Individuals Ages 25 and Older with a Doctorate, Professional or Master's Degree | 4.55 | 18.60 | 26.30 |