Summary:
Zip code 70461 in Slidell, Louisiana, is home to a single high school, Northshore High School, which serves grades 9 through 12 and is part of the highly-rated St. Tammany Parish school district.
Northshore High School stands out as a top-tier academic performer in Louisiana, ranking 40th out of 325 high schools statewide (88th percentile) in the most recent 2025-2026 rankings. The school demonstrates exceptional and balanced academic strength, with proficiency rates on state LEAP tests averaging 78.8% across all subjects, significantly outpacing the state average of 61.7%. Notably, the school achieved exactly 82% proficiency in Algebra I, Geometry, and English II, and it outperformed its already strong district in all six tested subjects. This consistent excellence suggests a high-quality, uniform instructional approach across all departments.
Despite serving a student body where 34.91% qualify for free or reduced lunch and a chronic absenteeism rate of 19.7%, the school achieves top-tier results, indicating an effective school culture and strong support systems. However, a key area for focus is the graduation rate of 85.7%, which, while slightly above the state average, lags behind the school's own stellar test scores. This creates a "leaky bucket" scenario where students perform well on standardized tests but may not be graduating at the same high rate, suggesting a potential need for enhanced support for at-risk students in their final years.
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