Mary M. Bethune High School was a public high school located in present-day Norco, Louisiana in St. Charles Parish, Louisiana.

[1] It served black students on the east bank of the Mississippi River,[2] from grades 1 through 12.

It was in the St. Charles Parish Public School System.

[3] Mary M. Bethune High School was an elementary and secondary racially segregated school located in the Diamond Community of Norco, Louisiana that opened in 1952.

[4][5] In 1969, the school was closed with elementary-aged children attending schools directed by court guidelines and high school students moved to the neighbouring Destrehan High School.