He has worked in both public and catholic Schools and previously was the Director of Advancement at St John's High School in Shrewsbury.
In an email to parents, Kara Kolomitz, Chair of the Board of Trustees said upon accepting the position Ermilio wrote:
"I am very humbled and grateful for this opportunity and the faith you and the Board have put in me. I look forward to working and partnering with you. My family and I are excited about getting to know the Marian community."
He will start on July 1 and will replace current principal Catherine Clifford.
The president will have the responsibility of budgetary issues. The principal will oversee the day-today academic activities.
Marian High School, located on Union Avenue in Framingham, is a Catholic, college preparatory, co-educational secondary school for students in grades 9-12. Founded in 1956, today the school has about 315 students coming from 20 MetroWest communities. And 98 percent of the graduates attend college.
Marian High will host its graduation for the class of 2014 tomorrow night.