Summary:
Zip code 21737, located in Glenelg, Maryland, is home to a single high school, Glenelg High, which serves grades 9-12 as part of the Howard County Public Schools district.
Glenelg High is a standout school with a unique academic profile. It is an absolute powerhouse in English Language Arts (ELA), with a 90% proficiency rate that far exceeds both the district (65.9%) and state (51.7%) averages. However, this strength is contrasted by a significant challenge in mathematics, where only 26.9% of students are proficient, which is below the state average of 27.1%. This math deficiency is most acute in Algebra I, where just 13.7% of students are proficient compared to 41.2% in the district. The school has a very low free/reduced lunch rate of 10.2%, indicating a student population with relatively high socioeconomic status, and a high graduation rate of 93.9%. Despite these strengths, the school has a chronic absenteeism rate of 21.8%, which is notably higher than the district average of 17.4%.
While Glenelg High remains a high-performing school, its state ranking has declined from 12th place in 2023-2024 to 33rd place in 2025-2026, likely due to other schools improving at a faster rate. With per-student spending of $18,024, the school is well-funded, but the return on investment is uneven, with world-class ELA outcomes not translating to similar success in math. This suggests a potential need for a strategic shift in math instruction or resource allocation to address the "Algebra I bottleneck" and improve overall student performance.
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