| Index | Cranbury | New Jersey | National |
| Average Test Scores | 81% | 52% | 48% |
| Student/Teacher ratio | 12:1 | 13:1 | 16:1 |
| Total public schools | 1 | 1,604 | 79,221 |
| Total private schools | 2 | 823 | 24,874 |
| Total post-secondary schools | 1 | 157 | 7,963 |
| Index | Cranbury | New Jersey | National |
| Completed 8th grade | 94.7% | 87.5% | 84.3% |
| Completed high school | 94.3% | 86.3% | 83.0% |
| Completed some college | 79.3% | 60.7% | 59.4% |
| Completed associate degree | 69.9% | 43.9% | 38.5% |
| Completed bachelors | 64.6% | 37.5% | 30.3% |
| Completed masters | 36.9% | 14.4% | 11.5% |
| Completed professional degree | 15.5% | 4.0% | 3.3% |
| Completed doctorate | 6.9% | 1.5% | 1.3% |
There are a total of 1 public schools, 2 private schools and 1 post-secondary schools in Cranbury. Using the proficiency score averages, the average test scores for Cranbury, NJ schools is 81%. The average student to teacher ratio is 12:1. In Cranbury, NJ, an average of 94.7% of students have completed 8th grade and an average of 94.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Roosevelt, NJ | 913 | 80% | 66.7% |
| Plainsboro Center, NJ | 2,715 | 77% | 60.4% |
| Skillman, NJ | 476 | 77% | 60.2% |
| Yorketown, NJ | 6,739 | 77% | 60.2% |
| Morganville, NJ | 4,738 | 75% | 56.6% |
| Cranbury, NJ | 2,213 | 81% | 68.8% |
| City | Population | Avg. Test Scores | National Avg. |
| Nokomis, IL | 2,213 | 43% | 9.9% |
| Great Barrington, MA | 2,213 | 53% | 11.1% |
| Oakboro, NC | 2,214 | 47% | 2.1% |
| Buena Vista, GA | 2,214 | 32% | 33.3% |
| Kensington, MD | 2,212 | 47% | 1.5% |
| Cranbury, NJ | 2,213 | 81% | 68.8% |
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