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For the 2025-26 school year, there is 1 public high school serving 392 students in Old Lyme, CT.

The top ranked public high school in Old Lyme, CT is Lyme-old Lyme High School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.

Old Lyme, CT public high school have an average math proficiency score of 67% (versus the Connecticut public high school average of 32%), and reading proficiency score of 87% (versus the 53% statewide average). High schools in Old Lyme have an average ranking of 10/10, which is in the top 10% of Connecticut public high schools.

Old Lyme, CT public high school have a Graduation Rate of 95%, which is more than the Connecticut average of 89%.

The school with highest graduation rate is Lyme-old Lyme High School, with ≥95% graduation rate. Read more about public school graduation rate statistics in Connecticut or national school graduation rate statistics.

Minority enrollment is 18% of the student body (majority Hispanic), which is less than the Connecticut public high school average of 55% (majority Hispanic).