Key Biscayne, Florida 33149-1411 3.6 18 reviews →
St. Christopher's By the Sea
- 1.5–11 yrs
- Ages
- Toddler · Primary · Elementary
- Levels
- $$$ · $20k+
- Tuition
- 26.4 : 1
- Ratio
- 232 students
- Enrollment
Facts & figures
From government filings and independent surveys — not the school's own marketing.
- Student-teacher ratio
26.4 : 1
232 students · 8.8 full-time-equivalent teachers
U.S. Dept. of Education private school survey, 2021–22
- School day
7 hours/day · 170 days/year
U.S. Dept. of Education private school survey, 2021–22
- Religious orientation
Episcopal
U.S. Dept. of Education private school survey, 2021–22
- Age levels
Infant/Toddler · Primary · Lower Elementary · Upper Elementary
- State license
Licensed child care center
Capacity 105 · licensed since 1980
Florida Dept. of Children & Families, 2026
From the school
Programs, tuition & schedule
"every child is a capable, curious, and compassionate learner"
Accreditation & affiliations
- International Baccalaureate · PYP candidate (launching 2025-2026)
Source: school's homepage ↗
Programs offered
- Toddler — 18+ months to 3 years
- Preschool — ages 3-4
- Kindergarten — age 5
- Lower Elementary
- Upper Elementary — through 5th grade
Source: school's Admissions page ↗
Tuition
2026-27 base tuition $20,000 (Toddler half-day) to $27,500 (Upper Elementary); $300 application fee; $5,000 registration deposit + $1,500 new student fee; three payment plans
Source: school's Admissions page ↗
Schedule
Scheduled tours conducted Monday-Friday 9:30-11:30 a.m. (school hours not published)
Admissions
How to apply
- Submit application + $300 non-refundable fee (waiting list)
- Interview: parent/child interview with class visit (preschool/JK) or classroom assessment with transcripts and teacher recommendations (SK-5th)
- Acceptance decision (priority to parish members and siblings)
- Registration deposit due March 1
Deadlines: Registration deposit and new student fee due March 1, 2026
Source: school's Admissions page ↗
Good to know
About St. Christopher's By the Sea
St. Christopher's By the Sea is a Montessori school (private) in Key Biscayne, Florida serving ages 1.5 - 12 years — AMS Member. every child is a capable, curious, and compassionate learner
Where is St. Christopher's By the Sea located? ⌃
95 Harbor Dr, Key Biscayne, FL 33149-1411
What is the phone number for St. Christopher's By the Sea? ⌃
St. Christopher's By the Sea can be reached at (305) 361-5080.
Is St. Christopher's By the Sea accredited? ⌃
St. Christopher's By the Sea lists the following accreditations or affiliations on its website: International Baccalaureate (PYP candidate (launching 2025-2026)).
How much is tuition at St. Christopher's By the Sea? ⌃
Per St. Christopher's By the Sea's own website: 2026-27 base tuition $20,000 (Toddler half-day) to $27,500 (Upper Elementary); $300 application fee; $5,000 registration deposit + $1,500 new student fee; three payment plans
How do you apply to St. Christopher's By the Sea? ⌃
St. Christopher's By the Sea's admissions process: Submit application + $300 non-refundable fee (waiting list); Interview: parent/child interview with class visit (preschool/JK) or classroom assessment with transcripts and teacher recommendations (SK-5th); Acceptance decision (priority to parish members and siblings); Registration deposit due March 1.
What are the hours at St. Christopher's By the Sea? ⌃
St. Christopher's By the Sea operates on these hours: Scheduled tours conducted Monday-Friday 9:30-11:30 a.m. (school hours not published).
What ages does St. Christopher's By the Sea serve? ⌃
St. Christopher's By the Sea serves children aged 1.5 - 12 years.
What is the website for St. Christopher's By the Sea? ⌃
The official website is stchriskb.org.