Our School

Welcome to Mission Grammar School!

Thank you for your interest in Our Lady of Perpetual Help, Mission Grammar School. Our school community works to educate the whole child, intellectually, emotionally, socially, and spiritually. We enroll scholars from 3 months old through 6th grade. Planted in our Catholic roots, we work so each scholar can benefit from a learning community celebrating the word of the Gospel.

– Ms. Sliney, Principal


of the scholar population is Hispanic or Latinx


is Black or African American


represent two or more races

We serve scholars and families from diverse ethnic, racial, religious and socioeconomic backgrounds. We are an inclusive campus, where scholars learn from and are enriched by their peers.

Our Mission

Our Lady of Perpetual Help, Mission Grammar School is an urban, college prep Catholic School dedicated to reaching individual excellence in a faith-based community rooted in Gospel values.

The strength of a school is in its community. Families, administration, faculty, staff, and scholars work in partnership to accomplish and strengthen academic and social success.

Our History & Vision

Late 1800’s

The growing immigrant population of Boston created new opportunities and development across the city. Recognizing the changing needs of the community and yearning to serve the spiritual needs of members of the neighborhood, the Redemptorist Fathers of Mission Church sought to found a parochial school.

September 1889

Our Lady of Perpetual Help Mission Grammar School welcomed a class of 914 pupils. Under the direction of the School Sisters of Notre Dame, the school witnessed continued growth, academic achievement in a foundation of faith based learning. We proudly continue the mission of the School Sisters in their “ministry of education for the transformation of the world.”


Mission Grammar consists of two campuses. The St. Alphonsus Campus houses our primary and upper school scholars. Our Tremont Campus is where our infants, toddlers and early childhood scholars learn and grow. In 2020, six new classrooms were constructed in our St. Alphonsus Campus, including a STEM lab and an outdoor classroom for scholars.


of families qualify for and receive scholarships


More than 40% of our families speak a language other than English in the home


of scholars identify as Catholic

Unity in Diversity

In a society characterized by diversity, Mission Grammar commits itself to inspire each scholar with a desire to build just and enriching relationships and society.

As a community that embraces differences and celebrates the fundamental dignity of the human person, we work to build a community of understanding.

Living the Gospel includes caring for God’s creation. As a school community we work to develop a deep prayer life, a commitment to helping others, and spreading the message of Christ.

As part of a neighborhood rich in resources, we seek to continually strengthen student opportunities, support our teachers and fulfill professional development at all levels.

Boston's Basilica

The Basilica is a diverse community that strives to nurture a strong, open, and inclusive congregation. Our communal worship is the heart of the parish, the center of our life, our first school of spirituality, and the source from which our strength flows. Our doors are open to welcome and support all cultures and people who are in need of spiritual, emotional, or physical healing. We seek to stand in solidarity with the poor and to work for social justice and peace.

The miraculous icon of Our Lady of Perpetual Help is the great spiritual treasure of our parish and school. As a Roman Catholic faith community, the Basilica is a beacon to the faithful.

Our Graduates

Mission Grammar Class of 2020 Acceptances