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
School Membership(s)School Assoc.
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.: 47%
Students by Grade
Academics and Faculty
Total Classroom Teachers
9 teachers
Student-Teacher Ratio
26:1
National avg.: 11:1
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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Popular comparisons: St. Christophers vs. St. Agnes Academy
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The nearest high school to St. Christophers is Immaculata-La Salle High School (4.5 miles away)
The nearest elementary school and preschool is St. Agnes Academy (0.1 miles away)
Show me:
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School
Location
Miles
Quick Facts
122 Harbor Dr
Key Biscayne, FL 33149
(305) 361-3245
Key Biscayne, FL 33149
(305) 361-3245
0.1 miles
Gr: PK-8 | 561 students Avg. class size: 24 students Sports: 5 | Extracurrculars: 10 Tuition listed
School
Location
Miles
Quick Facts
122 Harbor Dr
Key Biscayne, FL 33149
(305) 361-3245
Key Biscayne, FL 33149
(305) 361-3245
0.1 miles
Gr: PK-8 | 561 students Avg. class size: 24 students Sports: 5 | Extracurrculars: 10 Tuition listed
School
Location
Miles
Quick Facts
122 Harbor Dr
Key Biscayne, FL 33149
(305) 361-3245
Key Biscayne, FL 33149
(305) 361-3245
0.1 miles
Gr: PK-8 | 561 students Avg. class size: 24 students Sports: 5 | Extracurrculars: 10 Tuition listed
School
Location
Miles
Quick Facts
122 Harbor Dr
Key Biscayne, FL 33149
(305) 361-3245
Key Biscayne, FL 33149
(305) 361-3245
0.1 miles
Gr: PK-8 | 561 students Avg. class size: 24 students Sports: 5 | Extracurrculars: 10 Tuition listed
Key Biscayne International Christian School
(Presbyterian)
160 Harbor Drive
Key Biscayne, FL 33149
(305) 365-6070
Key Biscayne, FL 33149
(305) 365-6070
0.2 miles
Gr: PK-7 | 187 students
Key Biscayne Presbyterian School ![Key Biscayne Presbyterian School Photo]( "Key Biscayne Presbyterian School Photo")
(Presbyterian)
160 Harbor Dr
Key Biscayne, FL 33149
(305) 361-2058
Key Biscayne, FL 33149
(305) 361-2058
0.4 miles
Gr: PK-1 | 173 students Sports: 6 | Extracurrculars: 5
2 Fisher Island Dr
Miami Beach, FL 33109
(305) 531-2350
Miami Beach, FL 33109
(305) 531-2350
4.4 miles
Gr: PK-8 | 157 students Avg. class size: 11 students Extracurrculars: 11
Immaculata-La Salle High School ![Immaculata-La Salle High School Photo - Located on the shore of Biscayne Bay in the urban city of Miami, Immaculata-La Salle is owned by the Archdiocese of Miami and administered by the Salesian Daughters of Mary Help of Christians.]( "Immaculata-La Salle High School Photo - Located on the shore of Biscayne Bay in the urban city of Miami, Immaculata-La Salle is owned by the Archdiocese of Miami and administered by the Salesian Daughters of Mary Help of Christians.")
(Catholic)
3601 S Miami Ave
Miami, FL 33133
(305) 854-2334
Miami, FL 33133
(305) 854-2334
4.5 miles
Gr: 9-12 | 886 students Avg. class size: 20 students Sports: 14 | Extracurrculars: 45 Tuition & acceptance rate listed
School
Location
Miles
Quick Facts
Immaculata-La Salle High School ![Immaculata-La Salle High School Photo - Located on the shore of Biscayne Bay in the urban city of Miami, Immaculata-La Salle is owned by the Archdiocese of Miami and administered by the Salesian Daughters of Mary Help of Christians.]( "Immaculata-La Salle High School Photo - Located on the shore of Biscayne Bay in the urban city of Miami, Immaculata-La Salle is owned by the Archdiocese of Miami and administered by the Salesian Daughters of Mary Help of Christians.")
(Catholic)
3601 S Miami Ave
Miami, FL 33133
(305) 854-2334
Miami, FL 33133
(305) 854-2334
4.5 miles
Gr: 9-12 | 886 students Avg. class size: 20 students Sports: 14 | Extracurrculars: 45 Tuition & acceptance rate listed
10950 sw 34 street
Miami, FL 33165
(305) 553-1000
Miami, FL 33165
(305) 553-1000
4.6 miles
Gr: K-12 | 83 students
2045 South Bayshore Drive
Miami, FL 33133
(305) 460-8854
Miami, FL 33133
(305) 460-8854
4.8 miles
Gr: 6-12 | 1,112 students Tuition listed
848 Brickell Ave, Ph5
Miami, FL 33131
(305) 894-3770
Miami, FL 33131
(305) 894-3770
4.9 miles
Gr: 6-12 | 485 students
2911 Grand Avenue, Suite 500
Miami, FL 33133
(786) 495-0333
Miami, FL 33133
(786) 495-0333
5.2 miles
Gr: 1-12 Tuition listed
School
Location
Miles
Quick Facts
122 Harbor Dr
Key Biscayne, FL 33149
(305) 361-3245
Key Biscayne, FL 33149
(305) 361-3245
0.1 miles
Gr: PK-8 | 561 students Avg. class size: 24 students Sports: 5 | Extracurrculars: 10 Tuition listed
Key Biscayne International Christian School
(Presbyterian)
160 Harbor Drive
Key Biscayne, FL 33149
(305) 365-6070
Key Biscayne, FL 33149
(305) 365-6070
0.2 miles
Gr: PK-7 | 187 students
Key Biscayne Presbyterian School ![Key Biscayne Presbyterian School Photo]( "Key Biscayne Presbyterian School Photo")
(Presbyterian)
160 Harbor Dr
Key Biscayne, FL 33149
(305) 361-2058
Key Biscayne, FL 33149
(305) 361-2058
0.4 miles
Gr: PK-1 | 173 students Sports: 6 | Extracurrculars: 5
2 Fisher Island Dr
Miami Beach, FL 33109
(305) 531-2350
Miami Beach, FL 33109
(305) 531-2350
4.4 miles
Gr: PK-8 | 157 students Avg. class size: 11 students Extracurrculars: 11
10950 sw 34 street
Miami, FL 33165
(305) 553-1000
Miami, FL 33165
(305) 553-1000
4.6 miles
Gr: K-12 | 83 students
School
Location
Miles
Quick Facts
122 Harbor Dr
Key Biscayne, FL 33149
(305) 361-3245
Key Biscayne, FL 33149
(305) 361-3245
0.1 miles
Gr: PK-8 | 561 students Avg. class size: 24 students Sports: 5 | Extracurrculars: 10 Tuition listed
Key Biscayne International Christian School
(Presbyterian)
160 Harbor Drive
Key Biscayne, FL 33149
(305) 365-6070
Key Biscayne, FL 33149
(305) 365-6070
0.2 miles
Gr: PK-7 | 187 students
Key Biscayne Presbyterian School ![Key Biscayne Presbyterian School Photo]( "Key Biscayne Presbyterian School Photo")
(Presbyterian)
160 Harbor Dr
Key Biscayne, FL 33149
(305) 361-2058
Key Biscayne, FL 33149
(305) 361-2058
0.4 miles
Gr: PK-1 | 173 students Sports: 6 | Extracurrculars: 5
2 Fisher Island Dr
Miami Beach, FL 33109
(305) 531-2350
Miami Beach, FL 33109
(305) 531-2350
4.4 miles
Gr: PK-8 | 157 students Avg. class size: 11 students Extracurrculars: 11
Easter Seals Academy
Special Education School
1475 Nw 14th Ave
Miami, FL 33125
(305) 547-4727
Miami, FL 33125
(305) 547-4727
4.6 miles
Gr: PK | 173 students Avg. class size: 12 students
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Miles
Quick Facts
Miami Community Charter High School
Charter School
(Math: 15-19% | Reading: 30-34%)
Rank:
Rank:
1/
Bottom 50%10
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Homestead, FL 33034
(786) 601-8003
Homestead, FL 33034
(786) 601-8003
8145.4 miles
Gr: 9-12 | 265 students Student-Teacher Ratio: 16:1 Minority enrollment: 99%
Charter High School Of The Americas (Florida City Campus)
Vocational School
Charter School
Charter School
(Math: ≥50% | Reading: 60-79%)
Rank:
Rank:
7/
Top 50%10
103 East Lucy St
Homestead, FL 33034
(305) 242-3330
Homestead, FL 33034
(305) 242-3330
8145.7 miles
Gr: 9-12 | 48 students Student-Teacher Ratio: 16:1
Homestead Middle School
Magnet School
(Math: 30% | Reading: 27%)
Rank:
Rank:
1/
Bottom 50%10
650 Nw 2nd Ave
Homestead, FL 33030
(305) 247-4221
Homestead, FL 33030
(305) 247-4221
8145.7 miles
Gr: 6-8 | 545 students Student-Teacher Ratio: 16:1 Minority enrollment: 99%
Homestead Senior High School
Magnet School
(Math: 36% | Reading: 29%)
Rank:
Rank:
2/
Bottom 50%10
2351 Se 12th Ave
Homestead, FL 33034
(305) 245-7000
Homestead, FL 33034
(305) 245-7000
8145.7 miles
Gr: 9-12 | 2,323 students Student-Teacher Ratio: 22:1 Minority enrollment: 98%
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