RSU 3 refers to Regional School Unit 3, a school district located in Maine. It serves several communities, including Belfast, Searsport, and Stockton Springs. The district is responsible for providing education to students from kindergarten through high school, focusing on academic achievement and personal growth. The schools within RSU 3 aim to create a supportive learning environment. They offer various programs and extracurricular activities to enhance student engagement and development. The district emphasizes collaboration with families and the community to ensure a well-rounded education for all students.