Students from kindergarten through seventh grade attend mass on a weekly basis and participate in these masses by reading scripture and volunteering as altar servers. In addition to the weekly masses, OLL has monthly theme masses which the entire student body, many parents, and parishioners attend. Each grade level (kindergarten through seventh grade) and faculty members are afforded the opportunity to plan all aspects of the mass.
| August 13 | Back to School Mass | 7th grade |
| September 21 | Leadership Mass | Student Council |
| October 19 |
Mary Mass | 5th Grade |
| November 18 | Thanksgiving Mass | Kindergarten |
| December 8 | Feast of the Immaculate Conception | Religion Dept. |
| December 18 | Advent Mass | 3rd Grade |
| February 1 | Catholic Schools' Week Mass | 4th Grade |
| March 29 |
St. Patrick's Day Mass | 2nd Grade |
| April 26 |
Creation Mass | 1st Grade |
| May 25 | End of School Mass | 6th Grade |