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St. Christophers

95 Harbor Dr
Key Biscayne, FL 33149
St. Christopher's by-the-Sea Montessori School was established in 1968 with the opening of its preschool program.
Today, St. Christopher's offers a small and nurturing educational environment within the diverse and international community of Key Biscayne.
St. Christopher's continually seeks to incorporate other extracurricular opportunities for all students.
We at St. Christopher's feel blessed to have been entrusted with the education of generations of young Key Biscayners.
St. Christopher's by-the-Sea Montessori School is committed to providing quality Montessori education in a Christian setting.
Within this prepared environment we encourage children to discover and learn at their own pace, in order to realize their highest potential.
Through work and example, children come to understand responsibility, respect, integrity and high moral standards.
St. Christopher's by-the-Sea Montessori School prepares the whole person for the challenges of tomorrow.

Quick Facts (2026)

  • Top-Ranked FL School
  • School Type: Montessori School
  • Grades: Prekindergarten-6
  • Enrollment: 230 students
  • Average class size: 15 students
  • Application Deadline: None / Rolling
  • Source: Verified school update

Top Rankings

St. Christophers ranks among the top 20% of private schools in Florida for:

Category
Attribute
School History

School Overview

School Type
Religious Affiliation
Grades Offered
Grades Prekindergarten-6
Year Founded
1959
School Calendar

Student Body

Total Students
230 students
Student Body Type
Co-ed
% Students of Color
2%
State avg.: 48%
Students by Grade

Academics and Faculty

Total Classroom Teachers
9 teachers
Student-Teacher Ratio
26:1
National avg.:
Average Class Size
15 students

Tuition and Acceptance Rate

Admission Deadline
None / Rolling
Application URL

School Notes

  • School Motto: Always Believe
  • St. Christopher's by-the-Sea Montessori School was established in 1968 with the opening of its preschool program. Today, St. Christopher's offers a small and nurturing educational environment within the diverse and international community of Key Biscayne. St. Christopher's continually seeks to incorporate other extracurricular opportunities for all students. We at St. Christopher's feel blessed to have been entrusted with the education of generations of young Key Biscayners. St. Christopher's by-the-Sea Montessori School is committed to providing quality Montessori education in a Christian setting. Within this prepared environment we encourage children to discover and learn at their own pace, in order to realize their highest potential. Through work and example, children come to understand responsibility, respect, integrity and high moral standards. St. Christopher's by-the-Sea Montessori School prepares the whole person for the challenges of tomorrow.
Source: Verified school update

Frequently Asked Questions

What schools are St. Christophers often compared to?
St. Christophers is often viewed alongside schools like St. Agnes Academy by visitors of our site.
What is St. Christophers's ranking?
St. Christophers ranks among the top 20% of private schools in Florida for: Oldest founding date.
When is the application deadline for St. Christophers?
The application deadline for St. Christophers is rolling (applications are reviewed as they are received year-round).

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Quick Facts (2026)

  • Top-Ranked FL School
  • School Type: Montessori School
  • Grades: Prekindergarten-6
  • Enrollment: 230 students
  • Average class size: 15 students
  • Application Deadline: None / Rolling
  • Source: Verified school update

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Did You Know?

The average private school tuition in Miami-dade County, FL is $18,045 for elementary schools and $18,526 for high schools (read more about average private school tuition across the country).
The average acceptance rate in Miami-dade County, FL is 77% (read more about average acceptance rates across the country).

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