The St. Vrain Valley Schools is Colorado’s 7th largest school district serving more than 32,000 students in Dacono, Erie, Fir ... estone, Frederick, Hygiene, Longmont, Lyons, Mead, Niwot, portions of unincorporated Boulder County, and the County of Broomfield north of Highway 7. The mission of the St. Vrain Valley School District is to educate each student in a safe learning environment so that they may develop to their highest potential and become contributing citizens. Follow us on Twitter: @SVVSD Work in St. Vrain on Twitter: @HrSvvsd read more