Monmouth Middle School is the grades 4-8 school in Monmouth, Maine. We hope you find all the information you need on our web site. Contact us if you have any unanswered search. Monmouth is part of the Kennebec Intra-District Schools (KIDS) Regional School Unit (RSU) 2, which joins the towns of Dresden, Farmingdale, Hallowell, Monmouth, and Richmond.