Horizon Montessori III - STEM Academy
🇺🇸 Official data · 2025Harlingen, Texas 78550 · Horizon Montessori Public Schools
#3032 of 4,686 elementary schools in Texas
#34036 of 50,301 nationally
About Horizon Montessori III - STEM Academy
Horizon Montessori III - STEM Academy is a charter elementary located in Harlingen, in the Horizon Montessori Public Schools school district of Texas, United States. It caters for Grades PK–8. In 2025 it enrolled 291 students. Publicly funded charter schools operating under a performance contract; free to attend.
Its Success Index (US) is 36.9 out of 100, placing it in the lower 50% of elementary schools in United States and 3032nd of 4,686 ranked elementary schools in Texas. Its strongest component is students per teacher (44th percentile), and its weakest is math proficiency (32th percentile).
Other published figures: enrollment 291.
There are 30 schools in Harlingen; Horizon Montessori III - STEM Academy ranks 23rd of 30 scored schools there.
Success Index (US) breakdown
Each component is a percentile against elementary schools across United States.
- Math proficiency (30%)37%
- Reading proficiency (30%)42%
- Community advantage (fewer free/reduced-price lunch) (25%)70.8%
- Students per teacher (15%)15.3
The Success Index (US) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for Horizon Montessori III - STEM Academy by the official sources.
- Enrollment
- 291
- Students enrolled in the latest NCES directory year.
- Free/reduced-price lunch
- 70.8%
- Share of students eligible for free or reduced-price lunch.
- Students per teacher
- 15.3
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 42%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 37%
- Share of tested students proficient or above (all students, all grades).
Free academic assessment
Is your child on grade level in reading and math?
Success Tutoring offers personalised English and math tutoring from Kindergarten to Grade 12. Start with a free online assessment and a clear plan for the year ahead.
- Personalised learning plan mapped to the Australian Curriculum
- English & Maths from Kindergarten to Year 12
- Flexible memberships, no lock-in contracts
- Centres across NSW, VIC, QLD, WA, SA and ACT
Schools near Horizon Montessori III - STEM Academy
Closest schools by straight-line distance, with their Success Index (US).
Harlingen Collegiate H S
Harlingen · Public high · Grades 9–12
353 students · 438 m away
Treasure Hills El
Harlingen · Public elementary · Grades PK–5
758 students · 1.0 km away
South Texas ISD Rising Scholars Academy
San Benito · Public middle · Grades 6–8
781 students · 1.4 km away
Idea Academy San Benito
San Benito · Charter elementary · Grades K–5
685 students · 1.5 km away
Idea College Preparatory San Benito
San Benito · Charter high · Grades 6–12
780 students · 1.5 km away
Berta Cabaza Middle
San Benito · Public middle · Grades 6–8
695 students · 2.0 km away
Coakley Middle
Harlingen · Public middle · Grades 6–8
687 students · 2.7 km away
Houston El
Harlingen · Public elementary · Grades PK–5
420 students · 2.7 km away
Driscoll Play and Learn Day Care San Benito Center
San Benito · Public other · Grades PK–PK
22 students · 3.0 km away
Vernon Middle
Harlingen · Public middle · Grades 6–8
631 students · 3.1 km away
Similar schools
Charter elementary schools in Texas with a comparable Enrollment.
Step Charter El
Houston · Charter elementary · Grades K–8
293 students
Rocketship Explore El
Fort Worth · Charter elementary · Grades PK–5
289 students
Idea Health Professions Academy
Austin · Charter elementary · Grades K–5
294 students
A B Duncan Collegiate El
Floydada · Charter elementary · Grades PK–5
295 students
Meyerpark El
Houston · Charter elementary · Grades PK–8
296 students
Life School Carrollton
Carrollton · Charter elementary · Grades K–6
283 students
Frequently asked questions
Is Horizon Montessori III - STEM Academy a good school?
Horizon Montessori III - STEM Academy has a Success Index (US) of 36.9 out of 100 (Lower 50% of elementary schools in United States) and ranks #3032 of 4,686 in Texas. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does Horizon Montessori III - STEM Academy rank in Texas?
Horizon Montessori III - STEM Academy ranks #3032 of 4,686 elementary schools in Texas and #34036 of 50,301 nationally on the Success Index (US) (2025 data).
How many students attend Horizon Montessori III - STEM Academy?
Horizon Montessori III - STEM Academy had 291 students in 2025.
Is Horizon Montessori III - STEM Academy a elementary school or a high school?
Horizon Montessori III - STEM Academy is classified as a elementary covering Grades PK–8. It is a charter school.
What other schools are near Horizon Montessori III - STEM Academy?
There are 10 schools within 15 km of Horizon Montessori III - STEM Academy; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.