Summary
Mayport Coastal Science Middle School in Atlantic Beach, FL, serves 821 students in grades 6-8 and is a mid-sized public school within the Duval County School District. This school stands out for its exceptional performance in advanced coursework, with near-perfect proficiency rates in high school-level End-of-Course (EOC) exams: 100% in Geometry, 99% in Biology 1, and 94% in Algebra 1. These scores are dramatically higher than district and state averages, placing Mayport in a league of its own for preparing top students for high school material. The school's "Coastal Science" brand is genuine, as evidenced by its strong science curriculum, with 8th-grade science proficiency 17 points above the district average. However, this strength creates a "tale of two curricula," where standard grade-level math performance lags significantly—particularly in 7th grade, where proficiency dropped to just 24% in 2025-2026, far below the state average of 53%.
Compared to nearby schools, Mayport is a high-performing outlier within Duval County. It has a relatively low percentage of students from low-income families (22.66% free/reduced lunch), which contrasts sharply with peers like Matthew W. Gilbert Middle School (78.56%) and Arlington Middle School (63.01%). Its closest neighbor, Duncan U. Fletcher Middle School, has a similar demographic profile (25.38% low-income) but does not match Mayport's advanced coursework results. While Mayport earns a consistent 3-star rating from SchoolDigger (top 40-67th percentile statewide), it is not in the same league as the nearby Alice B. Landrum Middle School in the St. Johns County district, which achieves 80-90% proficiency across all subjects. Mayport's spending per student ($9,814) is the lowest among its Duval County peers, suggesting efficient resource use, but also raising questions about whether increased investment could address its math deficiencies.
Chronic absenteeism is a growing concern at Mayport, with a rate of 34.3% in 2023-2024—higher than the state average of 31.4% and up sharply from 10.3% pre-pandemic. This trend may contribute to the school's struggles in standard FAST Math assessments, particularly the "7th grade math cliff" where proficiency drops dramatically from 6th to 7th grade. For parents, Mayport is an excellent choice for a motivated, high-achieving student who thrives in advanced science and math coursework. However, families with a child performing at or below grade level in math should investigate the school's support systems, as the standard curriculum may not provide the same level of attention. Overall, Mayport is a beacon within Duval County, but it is not a regional powerhouse like its St. Johns County counterparts.
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