Summary:
Zip code 33149, covering Key Biscayne, Florida, is home to two public schools within the highly-rated Miami-Dade school district: Mast Academy, a magnet high school serving grades 6-12, and Key Biscayne K-8 Center, a neighborhood school serving pre-kindergarten through 8th grade.
Mast Academy is the standout school in this area, consistently ranking in the top 2% of Florida high schools and earning a 5-star rating. Its academic performance is exceptional, with near-perfect test scores—such as 98% proficiency in Algebra 1 and 100% in U.S. History—and a 98% graduation rate. Chronic absenteeism is remarkably low at 12.2%, less than half the state average. In contrast, Key Biscayne K-8 Center is a strong, above-average school with a 4-star rating, but it shows a notable performance dip in middle school grades. For example, 3rd grade ELA proficiency is 82%, but by 7th grade it drops to 47%, below district and state averages. Both schools serve an affluent community, with free/reduced lunch rates of 10.44% at Mast Academy and 6.33% at Key Biscayne K-8, which correlates with their high performance.
Key takeaways for parents include the stark contrast between the two schools: Mast Academy offers a world-class, elite secondary education, while Key Biscayne K-8 Center provides a solid elementary program but struggles with middle school transitions. Spending per student is similar ($11,780 vs. $11,304), yet the academic gap is wide, highlighting that factors like school culture and student selection drive success more than funding. For families in this zip code, Mast Academy is a top-tier choice for older students, while Key Biscayne K-8 is a reliable option for younger children, though parents should monitor middle school performance closely.
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