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Welcome to Oceanside’s first and only

Catholic school, since 1951.

Faith. Excellence. Service.

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St. Mary, Star of the Sea Catholic School

Preschool - 8th Grade Education

At St. Mary, Star of the Sea Catholic School in Oceanside, CA, our mission is to inspire children to grow academically and spiritually as we strive to be the best private school in all of North County, San Diego.

Through a combination of rigorous academics, faith formation, and hands-on experiences, we strive to develop well-rounded individuals who live out Christ’s love in their daily lives.

Enrollment is now open, and we warmly invite your family to explore our spacious Oceanside campus.

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Tuition Cost
Academics
Preschool
Frequently Asked Questions
St. Mary, Star of the Sea School, white statue of Mary displayed in front of our school.

“Mary means Star of the sea, for as mariners are guided to port by the ocean star, so Christians attain to glory through Mary’s maternal intercession.”

— Thomas Aquinas

Quick Question?

Frequently Asked Questions

Excellence through Classical

Catholic Education

Catholic schools often outperform public schools in a number of meaningful ways. According to the 2024 NAEP (Nation’s Report Card), fourth-grade Catholic students scored 247 in math compared to 237 for public school students, and they outpaced public-school students in reading by 16 points. At eighth grade, Catholic schools led by 21 points in math and 20 points in reading.

Beyond test scores, Catholic schools also show extremely high graduation rates: about 99% of Catholic high school students graduate, compared to significantly lower national public-school averages. A long-standing study by Coleman and Greeley found that Catholic-school students gain roughly 0.8 to 1.1 years of extra academic growth in reading, math, and writing thanks in part to stricter discipline, heavier homework loads, and more rigorous coursework.

For more information, visit our diocese page and find out why we consider our school one of the best in North County, San Diego.

87%
of Catholic Students
are above grade level in Math.

75% of our St. Mary’s middle school students are above grade level in reading

71% of 8th-grade Catholic school students reported high confidence in their reading skills/knowledge, compared to 61% of public school students.

84.7% of Catholic school graduates go on to attend four-year colleges while only 44.1% of public school graduates do.

Fall 2026

Enrollment now open!

Group of students and adults standing on front steps of a building, smiling for a photo. The students are in school uniforms, some wearing navy vests and khaki pants, with a few girls in white shirts and others in sweaters. Adults are dressed casuall
A group of elementary school children sitting on the carpet in a classroom, with some students raising their hands. There is a man, possibly a teacher or visitor, standing in front of them near the whiteboard, which has writing and drawings on it. Th
Six students in uniforms pose on outdoor staircase for a group photo. Four boys and two girls, all smiling, dressed in navy vests, white shirts, and khaki pants or skirts.
Group of students and adult woman standing in front of a tent with the sign 'St. Mary, Star of the Sea School.' The students are wearing school uniforms, and the woman is wearing a sweatshirt with the same school name.
Group of students standing outdoors in front of a statue of the Virgin Mary surrounded by flowers.
Group of young girls in blue volleyball uniforms posing on a sports court outdoors with palm trees and a clear blue sky in the background.
Youth football team in blue jerseys and black shorts huddling together on a grassy field with a coach during daytime.
Two boys in white robes praying together inside a church, with other children in similar robes and a stained glass window in the background.
Children dressed as biblical figures sit at a table during a religious play or classroom activity, with one child in white and purple robes standing and speaking, in front of a cross on the wall and banners that say "Pray Fast Give."
Two girls in school uniforms working on a craft project at a green table, with various supplies around them, in a classroom setting.
Children dressed as biblical characters sitting at a long table during a religious play or presentation; a young man in white robes with a purple sash stands in front of the group, speaking or presenting.
Students at tables participating in a chess tournament inside a gymnasium with banners and a speaker on the left.
Five children holding a blue banner with the text 'Calling All Alumni! Help us celebrate 75 years, 1951-2026' in front of a colorful mural, with some children waving and smiling.
Three children playing with colorful balls outdoors near a school building with palm trees in the background.
A young girl with dark, wet hair named with a middle part, diligently writing with a pencil in a classroom setting, surrounded by other students.
Two boys in school uniforms playing soccer on a grassy field, one is kicking the ball while the other tries to block.
Group of boys and a priest in religious robes standing together in a church, with one boy holding a wooden cross.
A young girl with long red hair in a braid, wearing a school uniform, participates in a school assembly, with her right hand raised in a prayer or pledge, surrounded by other students in similar uniforms.
Group of children reading a colorful book titled 'Kindergarten, Here I Come!' in a classroom setting.
A girl smiling and sitting with a ukulele, wearing a school uniform with a dark sweatshirt and a red hoodie, in a classroom setting.
Girl in school uniform writing in notebook at desk in classroom.
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