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For the 2025-26 school year, there are 2 public preschools serving 863 students in Groton, CT.

The top ranked public preschools in Groton, CT are Thames River Magnet School and Charles Barnum Magnet School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.

Groton, CT public preschools have an average math proficiency score of 47% (versus the Connecticut public pre school average of 36%), and reading proficiency score of 54% (versus the 42% statewide average). Pre schools in Groton have an average ranking of 4/10, which is in the bottom 50% of Connecticut public pre schools.

Minority enrollment is 53% of the student body (majority Hispanic), which is less than the Connecticut public preschool average of 59% (majority Hispanic).