The parochial school was founded in 1961 and is inspired by the charism of the Sisters of Notre Dame de Namur.

East Catholic is the only school in the Archdiocese of Hartford that has had the continued presence of its founding order throughout its history.

In 2020, the administration changed the “Head of School” and principal roles to “President” with “Deans” of Academics and Students.

[7] In 2011, now-retired baseball coach Jim Penders won his 600th career victory in a state semifinal game against Wamogo High.

The boys' golf program has contributed to more than 20% of the state championships won by East Catholic, winning twelve in total and eleven since 1999.