Tri-Valley: High School Late Schedule Facebook Twitter You Tube Facebook Menu Infinite Campus Students and Parents Teachers School Email Tri-Valley Staff Teacher of the Year Forms and Policies Library Look-up Educational Sites aimsweb Blackboard Learn ED Performance IXL Pearson Reading Street Promethean Planet Renaissance Stars SD Department of Education SD Stars Smarter Balanced Spelling City Think Central Ticket to Read Board Meeting Agendas and Minutes District Job Openings Tri-Valley Report Card Tri-Valley Time System School Calendars 2018-19 School Calendar 2018-19 Activities Calendar 2018-19 Lunch Menus School Schedules Elementary Schedule M.S. Master Schedule H.S. Master Schedule M.S. 2hr Late Schedule H.S. 2hr Late Schedule Contact Information 46450 252 Street Colton, SD 57018-5712 (605) 446-3538 (605) 543-5500 (605) 446-3482 (605) 446-3520 Mission Statement To provide a safe environment where all students can acquire the skills, knowledge, and character necessary to be solid citizens.