Saint Thomas More High School was established in 1972 by the merger of Don Bosco and Pio Nono High Schools.

It was initially named Thomas More High School, but the "Saint" was added to the name in the summer of 2007 to re-emphasize the school's Catholic heritage, at the request of Archbishop Timothy Dolan.

[2] Beginning in 2007, students are equipped with a laptop computer at the start of the school year.

[3] Saint Thomas More High School is a member of the Wisconsin Interscholastic Athletic Association and the Woodland Conference.

The school offers the following sports: Fall: football, boys' cross country, girls' cross country, boys' soccer, girls' volleyball, girls' swimming, girls' tennis, girls' golf, girls' pom pons Winter: boys' basketball, girls' basketball, boys' bowling, girls' bowling, boys' swimming, girls' pom pons, wrestling Spring: baseball, boys' track & field, girls' track & field, boys' tennis, boys' golf, girls' soccer, girls' softball Thomas More High School has won 18 state titles from 1973 to the present: PN denotes Pio Nono, DB denotes Don Bosco Thomas More's girls' volleyball team had a winning streak from 1997 to 2005, during which it won 77 conference matches and 8 consecutive conference titles.