| Index | Middlesex | New Jersey | National | 
| Average Test Scores | 56% | 52% | 48% | 
| Student/Teacher ratio | 14:1 | 13:1 | 16:1 | 
| Total public schools | 5 | 1,604 | 79,221 | 
| Total private schools | 2 | 823 | 24,874 | 
| Total post-secondary schools | n/a | 157 | 7,963 | 

 
				
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				| Index | Middlesex | New Jersey | National | 
| Completed 8th grade | 90.5% | 87.5% | 84.3% | 
| Completed high school | 88.3% | 86.3% | 83.0% | 
| Completed some college | 58.9% | 60.7% | 59.4% | 
| Completed associate degree | 37.4% | 43.9% | 38.5% | 
| Completed bachelors | 29.2% | 37.5% | 30.3% | 
| Completed masters | 10.1% | 14.4% | 11.5% | 
| Completed professional degree | 2.7% | 4.0% | 3.3% | 
| Completed doctorate | 0.8% | 1.5% | 1.3% | 
There are a total of 5 public schools, 2 private schools and n/a post-secondary schools in Middlesex. Using the proficiency score averages, the average test scores for Middlesex, NJ schools is 56%. The average student to teacher ratio is 14:1. In Middlesex, NJ, an average of 90.5% of students have completed 8th grade and an average of 88.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. | 
| Short Hills, NJ | 13,700 | 83% | 73.8% | 
| Summit, NJ | 21,913 | 81% | 69.3% | 
| Bradley Gardens, NJ | 14,714 | 81% | 68.2% | 
| New Providence, NJ | 13,382 | 80% | 66.4% | 
| Chatham, NJ | 8,729 | 79% | 64.9% | 
| Middlesex, NJ | 13,606 | 56% | 15.8% | 
| City | Population | Avg. Test Scores | National Avg. | 
| Marshall, MN | 13,604 | 57% | 19.0% | 
| Celina, TX | 13,608 | 65% | 36.3% | 
| Andover, KS | 13,609 | 51% | 6.8% | 
| Canton, IL | 13,600 | 33% | 31.5% | 
| Chelsea, AL | 13,599 | 60% | 25.0% | 
| Middlesex, NJ | 13,606 | 56% | 15.8% |