Saint Mary School is accredited by the New England Association of Schools and Colleges (NEASC).

Achievements: Excelsior

Award 2006, 2007, 2010, 2011 & 2012

This is awarded annually to the school achieving the highest scores in the Diocese in reading and math in the IOWA Mastery Test given to all students in the Catholic schools in Fairfield County.

Blue Ribbon

U.S. Secretary of Education Margaret Spellings named 320 schools as 2008 No Child Left Behind-Blue Ribbon Schools. The No Child Left Behind-Blue Ribbon Schools award distinguishes and honors schools for helping students achieve at very high levels and for making significant progress in closing the achievement gap.