Horizon Montessori III - STEM Academy

Horizon Montessori III - STEM Academy is a elementary school located in Harlingen, TX, serving grades -1–8 and approximately 343 students. Operated by Horizon Montessori Public Schools, the campus sits about 21.1 miles from The Brownsville's newsroom and is part of The Brownsville's ongoing local education coverage.

The school employs roughly 26 full-time-equivalent classroom teachers for a student-to-teacher ratio of about 13.2:1. That ratio is below the state average for TX, generally an indicator of smaller class sizes and more individualized instruction.

Horizon Montessori III - STEM Academy operates as a publicly funded charter school. These designations affect funding, enrollment policy, and the kinds of state and federal accountability measures the campus is subject to.

State accountability ratings for TEA are released annually and combine student achievement, growth, and closing-the-gaps metrics. The Brownsville publishes rating updates as soon as they become public each fall, with comparisons to nearby campuses and prior-year trends.

For families in Harlingen considering elementary placement, Horizon Montessori III - STEM Academy is one of the campuses The Brownsville regularly covers — including school board decisions, bond elections, and individual program changes that affect enrollment.

Tip about Horizon Montessori III - STEM Academy? Email editor@nexcom.media with the subject line "Horizon Montessori III - STEM Academy". For more education coverage, see thebrownsville.org/schools or browse The Brownsville's latest reporting at thebrownsville.org/news. This profile uses public data from the National Center for Education Statistics (NCES) and is updated annually as new federal filings are released.