Horizon Montessori Public Schools

Horizon Montessori Public Schools is a Texas charter district of four elementary schools serving grades PK-8 across the Rio Grande Valley and Houston metro area, with enrollments ranging from 216 to 331 students and a high average free/reduced lunch rate of 74.69%.

The district's standout school is Horizon Montessori - Stem Academy in McAllen, which is the top performer with the highest state ranking (56th percentile) and consistent upward trends, particularly excelling in Reading and advanced coursework where 100% of test-takers were proficient in English I Reading. In contrast, Horizon Montessori II - Stem Academy in Weslaco is the lowest-performing school, ranking in the bottom quartile (24th percentile) and struggling significantly in early-grade Reading and Math. Horizon Montessori Pearland - Stem Academy shows high volatility but strong recent test scores, including 70% proficiency in 3rd Grade Reading and 80% in 6th Grade Reading, despite having the lowest economic disadvantage rate (63.89%) and highest student-teacher ratio (15.4:1). Horizon Montessori III - Stem Academy in Harlingen spends the least per student ($8,208) but performs in the middle of the pack.

Key findings include a spending paradox where the school spending the most per student ($10,821 at Weslaco) is the lowest-performing, while the lowest-spending school performs adequately. The district shows dramatic grade-level volatility, such as 7th Grade Math at Weslaco jumping from 14.29% to 65.38% proficiency in one year, indicating small cohorts and teacher impact. Mathematics is the weakest subject district-wide, with several grades below 30% proficiency, while Reading is a relative strength. The district's advanced coursework program is exceptional, with 100% proficiency in English I Reading at both McAllen and Weslaco campuses, nearly double the state average. The stark performance gap between the McAllen and Weslaco campuses, despite being only 15 miles apart, suggests differences in school leadership or community engagement beyond spending or demographics.