Saint Louis School
Hawaiʻi School Guide ｜ Written by: Academia Tutor School Editorial Team / Supervised by: Yamahi
- Catholic, all-boys day school, Kindergarten through Grade 12, in Honolulu, sponsored by the Marianists (Society of Mary). Its roots go back to 1846. Only boys are admitted.
- Entry grades: Kindergarten through Grade 12, with separate steps for K, Grades 1–5 and Grades 6–12. There is no preschool.
- Next deadline: priority deadline for 2027–28 is Sunday, February 28, 2027; after that, applications are reviewed as space allows. Open houses on Nov. 4 and Nov. 18, 2026.
- Tuition 2026–27 (tuition plus comprehensive fees): K–5 $16,533; Grades 6–8 $18,094; Grades 9–12 $20,358.
Basic information
Which grades can you enter?
- Saint Louis accepts boys for Kindergarten through Grade 12. The school does not list seat counts by grade.
- Kindergarten: applicants must turn 5 by July 31. For 2027–28, that means born on or before July 31, 2022 (the checklist prints no year next to the cutoff).
- Grades 6–9: new students must also attend a Summer Orientation and Evaluation Session.
- The school’s elementary FAQ gives an acceptance rate of 84% (10-year average).
2027–28 admissions timeline
ApplicationFinancial aidOpen houseEnrollment
The financial aid priority deadline for new families comes before the admission priority deadline. The financial aid page and its FAQ say Feb. 19, 2027; other Saint Louis pages say Feb. 27 or Feb. 28. To be safe, apply for aid by Feb. 19 and confirm with the school. Also, there is no single decision day: decision letters go out once every step is complete, so finishing the steps early helps.
Tuition and financial aid
- 2026–27 tuition and fees (fee sheet updated Feb. 23, 2026): K–5 $15,533 plus $1,000 comprehensive fees = $16,533; Grades 6–8 $15,994 plus $2,100 = $18,094; Grades 9–12 $18,158 plus $2,200 = $20,358.
- Non-refundable enrollment deposit: $500, due April 15, 2027. One-time tuition stabilization charge: $200 (K–5), $225 (6–8), $250 (9–12). Grade 12 graduation fee: $500. The 2-payment and 11-payment plans carry extra charges.
- The elementary FAQ page still shows an older tuition figure; use the 2026–27 fee sheet. The current application fee is not listed.
- Financial aid is need-based and applied for through Clarity, opening Oct. 1. Priority deadlines: Jan. 29, 2027 for current families and Feb. 19, 2027 for new families. Decisions start in March, and recipients must keep a 2.5 GPA.
Applying from outside Hawaiʻi
- Saint Louis has a separate tuition rate for international students (total for 2026–27: K–5 $18,985; Grades 6–8 $20,586; Grades 9–12 $23,143) and an ESL program fee of $5,000 per year.
- International applicants may take the TOEFL Jr. and submit other standardized tests. The ESL program page (which looks out of date) asks non-U.S. citizens for a valid passport and student visa and a TOEFL score of at least 53 for Grades 9–12 — confirm before relying on it.
- The website does not say whether the school issues an I-20, and it does not mention boarding or homestay. Ask admissions.
- The International Admissions page covers exchanges and sister schools, including schools in Japan.
How Academia Tutor School can help
Our Private School Entrance Exam Prep program prepares children for the parts of admission that are hard to practice at home: the kindergarten observation session, the written test for Grades 1–5, and the interview and SSAT for older boys. Lessons run Monday to Friday after school, private or in groups of up to five. In 2026, our students were admitted to 23 schools.
No tutoring program can promise admission, and we do not. Our goal is for your child to walk in calm and ready to show who they are.
Related: Hawaii private school application deadlines for 2027–28 · Hawaiʻi School Guide
Sources
Saint Louis School, home page, “About Saint Louis School,” “Getting Started,” “Admissions FAQ,” “Financial Aid” and its FAQ, “Elementary,” “Academics,” “ESL Program,” “International Admissions,” the 2027–2028 admission checklists (Kindergarten, Grades 1–5, Grades 6–12) and the 2026–2027 Tuition and Fees sheet. Information as of October 24, 2026. Details change every year — always confirm with the school. Academia Tutor School is not affiliated with Saint Louis School.
