Average
#4803 of 8,547 schools in TX
Horizon Montessori III - Stem Academy
Elementary School · HORIZON MONTESSORI PUBLIC SCHOOLS
801 N 13TH ST STE 5 A, Harlingen, TX 78550
Enrollment
334
Student-Teacher
14.5:1
Score
6.0
Grades
Pre-K – 8th
Enrollment
334
Student-Teacher
14.5:1
Score
6.0
Grades
Pre-K – 8th
Updated
2022-23
Updated 2022-23
How this school compares
In Harlingen
#12 of 32
public schools
Texas elementary schools
#2,344 of 4,678
In district
#2 of 4
HORIZON MONTESSORI PUBLIC SCHOOLS
About Horizon Montessori III - Stem Academy
Horizon Montessori III - STEM Academy is a charter school located in Harlingen, Texas. Serving students from pre-kindergarten through eighth grade, the school boasts an enrollment of 334 students and maintains a student-teacher ratio of 14.5:1 with 23 full-time equivalent teachers. As part of the Cameron County community, Horizon Montessori III - STEM Academy offers a unique educational approach that integrates Montessori principles with STEM education.
The school’s academic performance is currently in the lower half when compared to other schools in Texas, ranking at #6214 out of 8598 total schools. The ELA/Reading proficiency rate stands at 40%, while Math proficiency sits at 30%. Despite these figures, Horizon Montessori III - STEM Academy remains committed to fostering a supportive learning environment that focuses on student development and growth.
Located in a small city setting, the school benefits from its tight-knit community. While there is no specific neighborhood data available for Harlingen’s ZIP code 78550, the local area offers a sense of familiarity and support for students and families alike.
What Parents Should Know
Horizon Montessori III - Stem Academy is a charter school — a publicly funded school that operates with more autonomy than traditional district schools. Charter schools often have distinct educational models or specialties. Parents should understand the school's specific mission, enrollment process, and how its approach differs from nearby district options.
Score Breakdown
Full Profile · 3/3 metricsView breakdown
View breakdown
Data not available for this school
View breakdown
Horizon Montessori III - Stem Academy — Students at Horizon Montessori III - Stem Academy score 30% proficient, which is below what's typical for similar communities (expected: 32%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
76.9%
Students qualifying for federal meal assistance
Test Scores TX EDFACTS (2020-21)
Based on 4 test records from TX state assessments. About our data
Proficiency Trend
↓ DecliningAverage proficiency (% at or above grade level) across Math & ELA over time.
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Source: EdFacts (NCES) and state assessment data. Growth score: 6.4/10.
How Horizon Montessori III - Stem Academy Compares
See how Horizon Montessori III - Stem Academy performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Performance Trends
Math proficiency has declined from 37% (2019) to 22% (2021). Reading/ELA proficiency has declined from 42% (2019) to 37% (2021).
Location
801 N 13TH ST STE 5 A, Harlingen, TX 78550
Nearby Alternatives
Families considering Horizon Montessori III - Stem Academy may also want to explore other elementary schools in the area. BONHAM EL (rated 5.2/10, 2.0 miles away), with a comparable rating. Another option is TREASURE HILLS EL (rated 4.9/10, 0.6 miles away), a more accessible option. Additionally, IDEA ACADEMY SAN BENITO (rated 4.8/10, 0.9 miles away, in nearby San Benito), a more accessible option. For more schools in Harlingen, see our Harlingen schools guide .
Nearby Schools
20 within 1.9 mi| School | Distance | Rating |
|---|---|---|
| HARLINGEN COLLEGIATE H S Harlingen | 0.3 mi | 5.1 |
| TREASURE HILLS EL Harlingen | 0.6 mi | 4.9 |
| CAMERON CO J J A E P San Benito | 0.7 mi | — |
| CAMERON CO J J A E P Harlingen | 0.7 mi | — |
| CAMERON CO J J A E P Los Fresnos | 0.7 mi | 5.5 |
| CAMERON CO J J A E P Port Isabel | 0.7 mi | — |
| CAMERON CO J J A E P Rio Hondo | 0.7 mi | — |
| HESTER JUVENILE DETENT San Benito | 0.7 mi | 7.6 |
| AMADOR R RODRIGUEZ JUVENILE BOOT CAMP San Benito | 0.7 mi | — |
| CAMERON CO J J A E P San Benito | 0.7 mi | 6.1 |
| SECONDARY ALTER CTR Harlingen | 0.8 mi | 6.3 |
| SOUTH TEXAS ISD RISING SCHOLARS ACADEMY San Benito | 0.9 mi | 6.5 |
| IDEA ACADEMY SAN BENITO San Benito | 0.9 mi | 4.8 |
| IDEA COLLEGE PREPARATORY SAN BENITO San Benito | 0.9 mi | 7.3 |
| BERTA CABAZA MIDDLE San Benito | 1.2 mi | 4.1 |
| TRIUMPH PUBLIC HIGH SCHOOLS-SAN BENITO San Benito | 1.3 mi | 6.4 |
| COAKLEY MIDDLE Harlingen | 1.7 mi | 5.1 |
| HOUSTON EL Harlingen | 1.7 mi | 3.4 |
| BONHAM EL Harlingen | 2.0 mi | 5.2 |
| VERNON MIDDLE Harlingen | 1.9 mi | 6.2 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 78550 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$51,524
Median Home Value
$120,500
Median Rent
$863/mo
Population
54,169
College Educated
21.7%
Homeownership
52.7%
Avg Commute
18.4 min
Poverty Rate
24.3%
Median Age
33.6
Community Profile
The community surrounding Horizon Montessori III - Stem Academy has a median household income of $51,524. It is a community where 22% of adults hold a bachelor's degree or higher. The median home value in the area is $120,500, with a median rent of $863/month. The area has a poverty rate of 24.3%, indicating some economic challenges in the community. Residents enjoy a short average commute of 18 minutes. Source: U.S. Census ACS 2022 5-Year Estimates.
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| ADA MAE FAUBION EL Cedar Park, TX | 6.0 |
| ADAMS HILL EL San Antonio, TX | 6.0 |
| BARRON EL El Paso, TX | 6.0 |
| BEATRICE MAYES INSTITUTE CHARTER SCHOOL Houston, TX | 6.0 |
| BEN MILAM EL Cameron, TX | 6.0 |
| BEN MILAM EL Dallas, TX | 6.0 |
Frequently Asked Questions
Common questions about Horizon Montessori III - Stem Academy
What grades does Horizon Montessori III - Stem Academy serve?
Horizon Montessori III - Stem Academy serves students in grades Pre-K through 8th.
How many students attend Horizon Montessori III - Stem Academy?
Horizon Montessori III - Stem Academy has an enrollment of approximately 334 students.
What is the student-teacher ratio at Horizon Montessori III - Stem Academy?
The student-teacher ratio at Horizon Montessori III - Stem Academy is 14.5:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Horizon Montessori III - Stem Academy rank in TX?
Horizon Montessori III - Stem Academy is ranked #4803 out of 8,547 schools in TX.
What is Horizon Montessori III - Stem Academy's MySchoolScout rating?
Horizon Montessori III - Stem Academy has a composite rating of 6.0 out of 10 on MySchoolScout. This score combines academic performance, student growth, and school environment into a single score. Equity data is shown separately for context.
What are the test scores at Horizon Montessori III - Stem Academy?
Based on the most recent state assessment data, Horizon Montessori III - Stem Academy has 29.5% math proficiency and 39.5% reading/ELA proficiency.
Is Horizon Montessori III - Stem Academy a charter school?
Yes, Horizon Montessori III - Stem Academy is a charter school. Charter schools are publicly funded but independently operated, often with more flexibility in curriculum and teaching methods.
Is Horizon Montessori III - Stem Academy a Title I school?
No, Horizon Montessori III - Stem Academy is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Horizon Montessori III - Stem Academy?
76.9% of students at Horizon Montessori III - Stem Academy qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
Neighborhood Context
- City Safety
- High (2,994/100K)
FBI UCR 2024. City-level (Harlingen). Data >1 year old.
Quick Facts NCES CCD (SY 2022-23)
- Grades
- Pre-K – 8th
- Enrollment
- 334
- Student-Teacher Ratio
- 14.5:1
- Teachers (FTE)
- 23
- Free/Reduced Lunch
- 76.9%
- Type
- regular
- Setting
- Small City
- County
- Cameron County
- Phone
- (956) 423-8207
- Data Year
- 2023–2024
Resources & Links
District
HORIZON MONTESSORI PUBLIC SCHOOLS- District Enrollment
- 1,424
- Schools in District
- 4
- Per-Pupil Spending
- $11,155
- District Rank
- #2 of 4
Other Schools in This District
How We Rate Schools
Every school receives a composite score from 1 to 10 based on four pillars: Academic Performance (50%), Student Growth (20%), Equity (15%), and Learning Environment (15%). Scores are built from publicly available data including standardized test results, enrollment figures, and school climate indicators.
Read our full methodologyRelated reading
- Best Public Schools in Texas 2026: Top-Ranked Elementary, Middle & High Schoolsbest schools
- Best School Districts to Move To in 2026: A Data-Driven Guidebest schools
- Best Schools in Austin, TX — 2026 Rankingsbest schools
- Best Schools in Dallas, TX — 2026 Rankingsbest schools
- Best Schools in Fort Worth, TX — 2026 Rankingsbest schools
Get school insights in your inbox
New rankings, best-schools lists, and parent guides — delivered free. No spam, unsubscribe anytime.
We respect your privacy. Unsubscribe at any time.