In 2008, the football team were the DIII Vermont Champions, capping off a perfect season with a 52- 28 victory over rival Windsor Yellowjackets.

The same year, the boys' basketball team were the DII Vermont champions, led by star player and SHS' all-time leader in points scored with 1,609, Grant White, breaking Greg Birsky's 32-year record of 1,436 in 1976.

In the spring of 2011 the Cosmos varsity softball team won their fourth state championship in school history with a 5–3 win over Lyndon Institute.

They eventually fell to number 1 seed Montpelier 8–0 at Randolph High School.

In 2016 the girls' field hockey team would garner SHS another State Championship with a 1–0 win in the finals against Woodstock at the University of Vermont.