St. Irenaeus Parish School Home

Learning, believing, and
serving… together.
Now enrolling for the 2021-2022 school year.
Space is Limited.
  • 18% Of students receive financial aid
  • 18 Average class size
  • 100% of teachers are of catholic faith
  • 15:1 Student to Faculty ratio
  • 94% of Students are of catholic faith
  • 3,500 alumni
  • 79% Graduated with first or second honors
  • 1,232 Community service hours completed by the class of 2019
  • 1/3 Received scholarships for high school
  • 100% of students accepted into catholic high school
  • 289 Students Enrolled

Recent News

Support Catholic Education on #GivingTuesday Featured Photo

Support Catholic Education on #GivingTuesday

After the hustle and bustle of Black Friday and Cyber Monday, comes the universal day of kindness, #GivingTuesday. On Tuesday, November 30 people around the world will come together to give back. Our St. Irenaeus students will be having a Soles4Souls Shoe Drive to get into the spirit of #GivingTuesday. If you would like to give to St. Irenaeus Parish School in the spirit of #Giving Tuesday, you can by simply clicking on the "Donation" button at the top of this page. All donations are welcomed.
St. Irenaeus Reopening Guidelines Featured Photo

St. Irenaeus Reopening Guidelines

St. Irenaeus Parish School submitted a waiver through the Diocese of Orange for in-person instruction. Our school is open for either in-person instruction or distance learning at this time. Click on the headline to review the Covid-19 Safety Plan, the Diocesan CPP, the School Guidance Checklist, to view the waiver, and to visit the California Department of Public Health website.
A Message From Mrs. Stella Costello Featured Photo

A Message From Mrs. Stella Costello

Click on the headline above to view a few words spoken by Mrs. Stella Costello, our Interim Principal, during our Information Night in February.
Take A Look Inside Our Classrooms Featured Photo

Take A Look Inside Our Classrooms

St. Irenaeus teachers are committed to learning, believing, and serving together safely. We would like to invite you into our classrooms. Please click on the headline above to view our Vimeo page.


Upcoming Events


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"Let us thank all those who teach in Catholic schools. Educating is an act of love; it is like giving life." - Pope Francis