Southwood (LA) High School has won the most state titles in girls basketball with 10
Madison High School with 18
As of March 1 2014 it is now 19
Michigan State has 2 men's basketball national championships and Michigan has 1.
Kingwood High School out of Houston, Texas won the Texas 5A state boys basketball championship in 2004-2005
Lawrence High School in Lawrence, KS has 105 total state championships.
California, Michigan and Ohio State are the only teams to win Division One national titles in baseball, football and men;s basketball, although none won them all in the same year According to the Texas website, "No school in NCAA history has ever won both the men's football and basketball championships in the same season." Therefore, no one has ever won all three. California and Michigan have won all three (Michigan has also won some hockey championships), but no team has ever won all three in the same season. Florida recently won basketball and football in the same season.
According to Wikipedia there has been 5 state championships
that is not the main plot but a fact in the movie which does not come into play
Ohio State has won 1 NCAA Men's Basketball Championship, in 1960.
Michigan state has only won two national basketball championships. the first one was in 1979, and the last one was in 2000 with Mateen Cleaves and Morris Petersons. They were dubbed as the Flinstones.
Kingwood High School won over Desoto High School 54-52.