Public • Grades K-652 students • 7 student/teacher
New Castle contains 1 primary and secondary schools. One of the best schools is Maude H. Trefethen School, which has a rating of 10. Maude H. Trefethen School has 52 students. Public schools in New Castle are part of New Castle School District. Kittery School Department is close by and rates worse than New Castle School District. Nearby Portsmouth School District is worse, with a rating of 7. The population of New Castle is 998. New Castle School District enrolls 5% of the population of New Castle.