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For the 2025-26 school year, there are 6 public schools serving 3,091 students in Colonia, NJ (there are , serving 331 private students). 90% of all K-12 students in Colonia, NJ are educated in public schools (compared to the NJ state average of 86%).

The top ranked public schools in Colonia, NJ are Lynn Crest Elementary School, Oak Ridge Heights Elementary School and Claremont Avenue Elementary School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.

Colonia, NJ public schools have an average math proficiency score of 41% (versus the New Jersey public school average of 38%), and reading proficiency score of 43% (versus the 49% statewide average). Schools in Colonia have an average ranking of 5/10, which is in the bottom 50% of New Jersey public schools.

Minority enrollment is 57% of the student body (majority Hispanic and Asian), which is less than the New Jersey public school average of 62% (majority Hispanic).