Regional School Unit 57 (RSU 57), formerly known as Maine School Administrative District 57 (MSAD 57), is a school district in Maine.
The district office is located in Waterboro, Maine, next to Massabesic High School.
Its current superintendent is Dr. Stephen Marquis.
[1] RSU 57 is in charge of the seven schools in the district, its buses, and the athletic fields: RSU 57 offers a selection of programs for students as well as adults, such as: RSU 57 programs a local educational access channel, Massabesic TV, which is seen on Time Warner Cable channel 16 and MetroCast channel 2 within the district area.