Average
#806 of 2,000 schools in AZ
Top 40% in state
Mountainside Middle School
Middle School · Scottsdale Unified District (4240)
11256 N 128TH ST, Scottsdale, AZ 85259
Enrollment
545
Student-Teacher
16.5:1
Score
6.7
Grades
6th – 8th
Enrollment
545
Student-Teacher
16.5:1
Score
6.7
Grades
6th – 8th
Updated
2022-23
Updated 2022-23
How this school compares
In Scottsdale
#31 of 41
public schools
Arizona middle schools
#83 of 218
In district
#25 of 30
Scottsdale Unified District (4240)
Academic performance
8.3 / 10
Very strong
About Mountainside Middle School
Mountainside Middle School serves 545 students in grades 6-8 in Scottsdale, Arizona, earning a solid 7.4 out of 10 rating from MySchoolScout. The school ranks #348 out of 2,029 Arizona schools, placing it in the 83rd percentile statewide with an impressive 8.1 academic score. With 33 full-time equivalent teachers, Mountainside maintains a favorable 16.5:1 student-teacher ratio that allows for more personalized attention.
Academic performance shows strength in English Language Arts, where 56% of students score proficient or above, while math achievement reaches 49% proficiency across grade levels, indicating opportunities for continued growth in mathematics. The school draws from an affluent and highly educated community in the 85259 zip code, where the median household income reaches $140,533 and home values average $857,500. This neighborhood demonstrates strong educational values, with 68% of residents holding bachelor's degrees or higher and maintaining a low 4.4% poverty rate.
Mountainside Middle School operates as a regular public school in Scottsdale's mid-size city environment, benefiting from the resources and community support that characterize this well-established Arizona educational hub known for its commitment to student achievement.
Score Breakdown
Full Profile · 3/3 metricsView breakdown
View breakdown
View breakdown
Mountainside Middle School — Students at Mountainside Middle School score 52% proficient, which is above what's typical for similar communities (expected: 48%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
0.1%
Students qualifying for federal meal assistance
Test Scores AZ EDFACTS (2021-22)
Based on 6 test records from AZ 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: 4.8/10.
How Mountainside Middle School Compares
See how Mountainside Middle School performs across key quality dimensions compared to state benchmarks.
Performance Trends
Math proficiency has declined from 63% (2019) to 49% (2022). Reading/ELA proficiency has declined from 67% (2019) to 56% (2022).
Location
11256 N 128TH ST, Scottsdale, AZ 85259
Nearby Alternatives
Families considering Mountainside Middle School may also want to explore other middle schools in the area. Desert Canyon Middle School (rated 7.2/10, 4.2 miles away), which scores slightly higher. Another option is Fountain Hills Middle School (rated 7.2/10, 4.4 miles away, in nearby Fountain Hls), which scores slightly higher. Additionally, Mission Montessori Academy's Middle Years Program (rated 4.4/10, 4.0 miles away, in nearby Phoenix), a more accessible option. For more schools in Scottsdale, see our Scottsdale schools guide .
Nearby Schools
20 within 4.6 miNeighborhood Census ACS (2019-2023)
Census data for ZIP 85259 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$145,574
Median Home Value
$956,300
Median Rent
$1,769/mo
Population
22,156
College Educated
68.6%
Homeownership
77.5%
Avg Commute
24.7 min
Poverty Rate
3.9%
Median Age
52
Community Profile
The community surrounding Mountainside Middle School has a median household income of $145,574. It is a well-educated community where 69% of adults hold a bachelor's degree or higher. The median home value in the area is $956,300, with a median rent of $1,769/month. The local poverty rate of 3.9% is relatively low. The average commute for residents is 25 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 |
|---|---|
| Baker Middle School Kayenta, AZ | 6.7 |
| Doolen Middle School Tucson, AZ | 6.7 |
| Hurley Ranch Elementary Tolleson, AZ | 6.7 |
| Ray Borane Middle School Douglas, AZ | 6.7 |
| Morris K. Udall Escuela de Bellas Artes Phoenix, AZ | 6.8 |
| Mountain Sky Middle School Phoenix, AZ | 6.8 |
Frequently Asked Questions
Common questions about Mountainside Middle School
What grades does Mountainside Middle School serve?
Mountainside Middle School serves students in grades 6th through 8th.
How many students attend Mountainside Middle School?
Mountainside Middle School has an enrollment of approximately 545 students.
What is the student-teacher ratio at Mountainside Middle School?
The student-teacher ratio at Mountainside Middle School is 16.5:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Mountainside Middle School rank in AZ?
Mountainside Middle School is ranked #806 out of 2,000 schools in AZ.
What is Mountainside Middle School's MySchoolScout rating?
Mountainside Middle School has a composite rating of 6.7 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 Mountainside Middle School?
Based on the most recent state assessment data, Mountainside Middle School has 55.3% math proficiency and 60.3% reading/ELA proficiency.
Is Mountainside Middle School a charter school?
No, Mountainside Middle School is not a charter school. It is a traditional public school operated by the local school district.
Is Mountainside Middle School a Title I school?
No, Mountainside Middle School is not currently a Title I school.
Neighborhood Context
- City Safety
- High (2,031/100K)
FBI UCR 2024. City-level (Scottsdale). Data >1 year old.
Quick Facts NCES CCD (SY 2022-23)
- Grades
- 6th – 8th
- Enrollment
- 545
- Student-Teacher Ratio
- 16.5:1
- Teachers (FTE)
- 33
- Type
- regular
- Setting
- Midsize City
- County
- Maricopa County
- Phone
- (480) 484-5500
- Data Year
- 2023–2024
Resources & Links
District
Scottsdale Unified District (4240)- District Enrollment
- 20,940
- Schools in District
- 30
- Per-Pupil Spending
- $11,306
- District Rank
- #25 of 30
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
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