Home About CMS After School Sports After School Guide Associated Programs Calendars CMS Student Links Curriculum Department Postings Email CMS Handbooks and Reports CMS PTG And Missives For Parents Library Lunch Menus Nurses Office School Directory Technology School District Email Lists District Home Page   CMS School Hours Monday Wednesday Thursday Friday 8:15 AM - 2:30 PM Tuesdays and Early Release Days 8:15 AM - 1:00 PM Concord Middle School Arthur Unobskey, Principal Peabody Building 1231 Old Marlboro Road Concord, MA 01742 Main Office Phone: (978) 318-1360 Voice Mail Directory: (978) 341-2490 Sanborn Building 835 Old Marlboro Road Concord, MA 01742 Main Office Phone: (978) 318-1380 Voice Mail Directory: (978) 341-2490