Williston has 4 schools. One of the best schools is Williston Schools, which has a rating of 8. It has 1,150 children. Public schools in Williston belong to Williston School District. Essex Community Education Center is close and scores higher than Williston School District. Nearby Essex Town School District is worse, with a rating of 7. The population of Williston is 8,763. Williston School District enrolls 13% of the population of Williston.