Two Schools, One Family Mater Salvatoris: Girls Pre-K3 though Grade 12, Boys Pre-K3 through Kindergarten. Stella Maris: Boys Grades 1 through Grade 12. WHO WE ARE STELLA MARIS FOR BOYS MIDDLE/ HIGH SCHOOL OPEN HOUSE OCT, 3 MATER SALVATORIS NEWS MATER SALVATORIS COMPANY OF THE SAVIOR TWO SCHOOLS, ONE FAMILY