Saint Louis School announced Friday that it will add elementary grades starting in the 2016-17 school year.

The all-boys college-preparatory school in Kaimuki will once again become a full K-12 campus with the addition of kindergarten through fifth-grade classes.

“After starting a fifth-grade pilot program this year, it is clear that there is a great demand for students wanting to enter Saint Louis School at the elementary level,” Board of Trustees Chairman T. Michael Hogan said in a statement.

Hawaii pop singer-turned-educator Glenn Medeiros, who began his post as school president in July, has been named head of school.

“This is an exciting time for the Crusader ohana,” Medeiros said in a statement. “We now have a tremendous opportunity to reach students at the elementary level and incorporate educational strategies at an early age that empower boys to excel.”

NFL quarterback and Saint Louis School alumnus Marcus Mariota has brought recent attention to his alma mater, even thanking the school in his Heisman Trophy acceptance speech in December.

Saint Louis previously had enrolled students in first through 12th grade, but the elementary and intermediate grades were phased out beginning in 1950. The school has offered grades 6 through 12 since 1990.

The only other all-boys school in the state is the St. Andrew’s Preparatory School for Boys, which opened last fall on the Honolulu campus of the St. Andrew’s Priory School for Girls and enrolls students in kindergarten through third grade. Damien Memorial School became coeducational three years ago.