Summary:
Zip code 21108 in Millersville, Maryland, is served by two public middle schools, Old Mill Middle South and Old Mill Middle North, both part of the Anne Arundel County Public Schools district, and they present a clear contrast in performance and trajectory.
Old Mill Middle North is the standout school in the area, showing strong academic results and a positive upward trend. It has moved from a 37th percentile state ranking to a 60th percentile ranking over the past few years, and its English Language Arts proficiency rate of 54.3% actually exceeds the state average. The school is a powerhouse in advanced math, with an Algebra I proficiency rate of 55.1%—more than double the state average of 21.3%. In contrast, Old Mill Middle South has been declining, dropping from a 64th percentile ranking to a 48th percentile ranking. Its math proficiency is lower at 16.6%, and its ELA proficiency is 45.3%, both below district averages. The two schools have nearly identical per-student spending (around $17,400), yet their outcomes differ significantly, suggesting that factors beyond funding—such as instructional effectiveness and student demographics—are at play.
Key metrics highlight the gap: Old Mill Middle North has a lower chronic absenteeism rate (15.9% vs. 19.1%) and a lower percentage of students receiving free/reduced lunch (41.34% vs. 57.46%). A critical concern at Old Mill Middle South is the sharp drop in 8th-grade math proficiency to just 2.3%, indicating a systemic challenge in preparing students for advanced curriculum. Overall, families in this zip code face a clear choice between a rising school with strong advanced programs and a school that is struggling to maintain its performance.
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