Marian High School (also known as Mishawaka Marian or simply Marian) is a Roman Catholic secondary school in Mishawaka, Indiana in the United States, operated by the Roman Catholic Diocese of Fort Wayne-South Bend. Marian was a top 50 school in 2005 noted on the Catholic High School Honor Roll. Marian High School holds a First Class commission from the Indiana State Department of Education and has been accredited by the North Central Association since 1996. Marian received a letter grade of "A" for the 2013-2014 school year from the state.