Best Schools in Key Biscayne, Florida
5 schools · 4 Elementary · 1 High
Choosing a school in Key Biscayne?
Use this page to compare every school in Key Biscayne by level, neighborhood, and district — and find the right fit, not just the top of the list.
Shortlist starter
Start with these real page-level signals, then use the full table and map below.
Mast Academy
High · Miami-dade. Ranked from real test data; use the map and table below to check address fit.
Key Biscayne K-8 Center
Elementary · Miami-dade. Ranked from real test data; use the map and table below to check address fit.
St Agnes Academy
Elementary. Ranked from real test data; use the map and table below to check address fit.
The short answer
The top-rated schools in Key Biscayne for 2026 are Mast Academy (8.6/10), Key Biscayne K-8 Center (7.2/10), and St Agnes Academy (6.0/10), based on MySchoolScout's analysis of real test data across 4 rated schools. Ratings blend student growth, poverty-adjusted academic achievement, and school environment (plus college readiness for high schools), with equity shown as context, not scored; schools with estimated (proxy) scores are excluded from this ranking.
Schools
5
2 public · 3 private
Avg Score
6.5
out of 10
Median Home
$1,231,500
home value · ACS
District
1
serving the city
Schools
5
2 public · 3 private
Avg Score
6.5
out of 10
Median Home
$1,231,500
home value · ACS
District
1
serving the city
Top-Rated Schools in Key Biscayne
Ranked by MySchoolScout composite using only schools with real test data (4 of 5). "Value" = points above what student poverty predicts. Estimated (proxy) scores are excluded.
| # | School | Rating |
|---|---|---|
| 1 | Mast Academy | 8.6 / 10 |
| 2 | Key Biscayne K-8 Center | 7.2 / 10 |
| 3 | St Agnes Academy | 6.0 / 10 |
| 4 | St Christophers | 4.0 / 10 |
See every school — including those with estimated data — in the full directory below. How we rate schools.
Family Snapshot
At a glance- Avg school rating
- 6.5/10
- Median household income
- $171,982
- Median home value
- $1,231,500
- Bachelor's degree or higher
- 74%
- Avg commute
- 24 min
- Owner-occupied homes
- 69%
50% of schools rated 7+
Census ACS, ZIPs in this city
Owner-occupied units
Adults 25+
Workers age 16+
Of occupied housing units
How Key Biscayne compares
Florida rank
#126 of 280
cities by avg. school score
Vs. state average
+0.2
above Florida avg (6.3)
Median household income
$172k
230% of Florida median
Schools in this city
4
About Schools in Key Biscayne, Florida
Key Biscayne, Florida is home to 5 schools, including 2 public schools and 3 private schools. The city's schools span 4 elementary schools, , and 1 high school.
With an average rating of 6.5 out of 10, schools in Key Biscayne show moderate performance on the MySchoolScout composite scale, which blends student growth, poverty-adjusted academic achievement, and school environment — plus college readiness for high schools.
The highest-performing school in Key Biscayne is Mast Academy with a composite score of 8.6/10, demonstrating strong academic outcomes and school quality metrics.
Key Biscayne is served by 1 school district: MIAMI-DADE. These districts collectively serve 335,500 students.
Key Biscayne's community shows 74% bachelor's degree attainment with a median household income of $171,982. The poverty rate in the area is 7.7%.
Browse the schools below to compare ratings, test scores, enrollment, and other key metrics. Use the filters to focus on specific school levels or types that match your family's needs.
Elementary Schools
4 schools| # | School | Rating | ||
|---|---|---|---|---|
| 1 | 878 students · Pre-K–8th | 7.2 | ||
| Private Schools 3 schools Private and public school ratings use different data sources and scoring models. Scores are not directly comparable across school types. | ||||
| 1 | St Agnes Academy
Private
434 students · Pre-K–8th | 6.0 | ||
| 2 | St Christophers
Private
215 students · Pre-K–6th | 4.0 | ||
| 3 | Key Biscayne Presbyterian School
Private
29 students · Pre-K–1st | — | ||
High Schools
1 school| # | School | Rating |
|---|---|---|
| 1 | 1,548 students · 6th–12th | 8.6 |
Schools in Key Biscayne
Key Biscayne, Florida · 5 schools
Community Demographics
Census ACS 2022 5-Year Estimates across 1 ZIP code
Median Income
$171,982
Median Home Value
$1,231,500
Median Rent
$3,501/mo
Population
14,628
College Educated
74%
Homeownership
69%
Avg Commute
24 min
Poverty Rate
7.7%
Community Profile
Key Biscayne has a median household income of $171,982. It is a well-educated community where 74% of adults hold a bachelor's degree or higher. The median home value in the area is $1,231,500, with a median rent of $3,501/month. The local poverty rate of 7.7% is relatively low. The average commute for residents is 24 minutes. Source: U.S. Census ACS 2022 5-Year Estimates.
Schools by Level
- State
- Florida
- Elementary
- 4
- High
- 1
Resources
School District
Nearby Cities
Other Major Cities in Florida
Top metros statewide by school count.
How we rate schools
A clear 1–10 score built from public data — growth, academics, and learning environment. No hidden criteria, no pay-to-play.
See how we rateFrequently Asked Questions
Common questions about schools in Key Biscayne, Florida
How many schools are in Key Biscayne, Florida?
Key Biscayne has 5 schools, including 2 public and 3 private schools spanning elementary, middle, and high school levels.
What is the average school rating in Key Biscayne, Florida?
The average MySchoolScout composite score for schools in Key Biscayne is 6.5 out of 10, built from student growth, poverty-adjusted academic achievement, and school environment — plus college readiness for high schools.
What is the top-ranked school in Key Biscayne, Florida?
The top-ranked school in Key Biscayne on MySchoolScout is Mast Academy with a composite score of 8.6/10.
What is the best elementary school in Key Biscayne, Florida?
The top-ranked elementary school in Key Biscayne on MySchoolScout is Key Biscayne K-8 Center with a composite score of 7.2/10.
What is the best high school in Key Biscayne, Florida?
The top-ranked high school in Key Biscayne on MySchoolScout is Mast Academy with a composite score of 8.6/10.
How many school districts serve Key Biscayne, Florida?
Key Biscayne is served by 1 school district: Miami-dade.
What is the education level in Key Biscayne, Florida?
According to Census data, 74% of adults in Key Biscayne have earned a bachelor's degree or higher.
What is the median income in Key Biscayne, Florida?
The median household income in Key Biscayne is approximately $171,982 according to Census ACS 2022 estimates.
Are there private schools in Key Biscayne, Florida?
Yes, Key Biscayne has 3 private schools alongside 2 public schools. The top-rated private school is St Agnes Academy with a score of 6.0/10.
What is the student-teacher ratio in Key Biscayne, Florida?
The average student-teacher ratio across schools in Key Biscayne is 16.4:1. This ratio varies by school, so families should check individual school profiles for specific classroom sizes.
How does MySchoolScout rate schools in Key Biscayne, Florida?
MySchoolScout rates schools using publicly available data from the NCES Common Core of Data and state education departments. Each school receives a 1-10 composite score built from Student Growth, Poverty-Adjusted Academic Achievement, and School Environment — plus College Readiness for high schools. Weights vary by school level, and equity data is shown for context but not scored.
Related reading
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Data from NCES Common Core of Data, Florida Dept. of Education, and U.S. Census ACS for the 2023–24 school year. Rankings computed by MySchoolScout. See all data sources.