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SCHOOL COMMUNITY·SCOTTSDALE UNIFIED DISTRICT (4240)·NCES 040757001562

Mountainside Middle School

11256 N 128TH ST, SCOTTSDALE, AZ 85259 · (480) 484-5500 · Maricopa County
GRADES 06–08MIDDLE12-CITYREGULAR SCHOOL518 STUDENTS
A
allk12 Grade
Scored higher than 93% of Arizona public middle schools
  • ATest scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
  • ·Beats expectations Not available for this school, so the grade uses the other parts.
  • B+Three-year trend Change in reading and math proficiency over the last three test years.

Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded Arizona public middle schools

Enrollment
518
Middle
DISTRICT 669 · STATE 494
Student : Teacher
16.2:1
32 FTE teachers
DISTRICT 16.3:1 · STATE 17.8:1
Free / Reduced Lunch
,
Title I proxy
STATE 95%
Community
6
0 members
Enrollment and student:teacher ratio compared against other middle schools. Free/Reduced Lunch and demographics compared against all schools.

Enrollment by grade, 2024-25

GradeStudentsShare
Grade 613726%
Grade 719137%
Grade 819037%
Student demographics
47%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 58% · STATE 65% · US 70%
White
36971%
DISTRICT 59% · STATE 33% · US 43%
Hispanic
5611%
DISTRICT 25% · STATE 48% · US 30%
Black
245%
DISTRICT 4% · STATE 6% · US 15%
Asian
438%
DISTRICT 5% · STATE 3% · US 6%
Two+
173%
DISTRICT 4% · STATE 4% · US 5%
Native American
71%
DISTRICT 2% · STATE 5% · US 1%
Pacific Islander
20%
DISTRICT 0% · STATE 0% · US 0%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Male
26451%
Female
25449%

Discussions

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Test scores

AASA 2024-25 . % Passing
English Language Arts
62.0%
AZ avg 45.4% . -6.0pp since 2017
Math
48.0%
AZ avg 37.8% . -17.0pp since 2017

What this means: On the AASA, Arizona's statewide test, about 62 of every 100 students at this school read and write at grade level and about 48 of 100 do math at grade level. Across all Arizona schools, those numbers are about 45 and 38. Reading and writing scores are down about 6 points since 2017, while math scores are down about 17 points.

AASA results by year

School yearEnglish Language ArtsMath
2024-2562.0%48.0%
2023-2465.0%53.0%
2022-2357.0%49.0%
2021-2256.0%50.0%
2020-2157.0%54.0%
2018-1966.0%63.0%
2017-1868.0%65.0%
% Passing, all students and all tested grades.
Source: AASA. All students, all grades. See all years and grades →

Where Mountainside Middle School ranks

Among middle schools
MeasureThis schoolIn ArizonaIn Maricopa County
Math proficiency
ranked highest first
48.0%#23 of 190
▼ 10
#19 of 87
▼ 9
Reading proficiency
ranked highest first
62.0%#17 of 190
▼ 12
#13 of 87
▼ 11
3-year test score change
ranked biggest gain first
+2.0pp#57 of 160#28 of 78
Enrollment
ranked largest first
518#101 of 214#63 of 96
Students per teacher
ranked fewest first
16.2:1#49 of 179#17 of 85
Diversity index
ranked most diverse first
47.0%#112 of 182#62 of 86
Enrollment change since 2017-18
ranked steepest decline first
-17.8%#79 of 139#44 of 69
Ranked against other public middle schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.

4-year change

SY 2020-21 vs SY 2024-25
Enrollment
518
+30 (+6%) vs 2020
-54% since 2000-01, when it was 1,125
Student : Teacher
16.2:1
was 16.3:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-255183216.2:1N/A
2023-2454533.116.5:1N/A
2022-2355031.317.6:111% (60)
2020-214883016.3:1N/A
2017-1863031.520.0:19% (56)
2015-166933519.8:18% (53)
2010-119244222.0:18% (70)
2000-011,1255620.1:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for Mountainside Middle School.

Since 2017-18: students down 18% (630 to 518); teachers up 2% (31.5 to 32).

About Mountainside Middle School

This page covers Mountainside Middle School, a medium-sized middle-grades school in SCOTTSDALE, Arizona. The school enrolls 518 students, from grades 6 through 8.

Scottsdale Unified District (4240) includes 30 schools. Together they enroll 20,682 students.

Mountainside Middle School is 71% White by enrollment. The rest of enrollment is 11% Hispanic, 8% Asian, 5% Black, and 3% multiracial. Census estimates put the White share of Maricopa County's population at about 59%. Mountainside Middle School's diversity index is 47%, against a US figure of 70%.

The school's student-to-teacher ratio is about 16.2:1, with 32 full-time-equivalent teachers. That is lower than the 17.8:1 average for middle schools in Arizona.

The allk12 Grade for Mountainside Middle School is A. Compared with Arizona public middle schools, the school scored higher than 93% on a mix of test scores, poverty-adjusted results, and recent trend.

In the county around the school, Maricopa County, the median household income is $89,300, roughly 37% of adults have a four-year degree or more, and about 8% of residents live below the federal poverty line. There are 1,352 public schools in Maricopa County, enrolling about 725,139 students in all.

Desert Mountain High School is the nearest neighboring public school, about 0.2 miles away. Within five miles of Mountainside Middle School, there are at least 8 other public schools.

Federal data place Mountainside Middle School in the City: Mid-size locale, which means it is inside a principal city with a population between 100,000 and 250,000.

Enrollment at Mountainside Middle School climbed 6% between 2020-21 and 2024-25, from 488 to 518 students.

Community posts for Mountainside Middle School can cover school safety, transportation, and start times. Questions from prospective families are welcome too.

Maricopa County at a glance

View full county profile
Population
4,559,748
Census ACS
Median income
$89,300
Household, ACS
Bachelor's+
37%
Adults 25+
Poverty rate
8%
Below federal line
Schools in county
1,352
725,139 students

Quick facts

School name
Mountainside Middle School
District
Scottsdale Unified District (4240)
Address
11256 N 128TH ST, SCOTTSDALE, AZ 85259
Phone
(480) 484-5500
County
Maricopa County
Level
Middle
Grade range
06–08
Total enrollment
518
Teachers (FTE)
32
Student–teacher ratio
16.2:1
Locale
12-City: Mid-size
NCES ID
040757001562
Charter school
No
Virtual school
No

Related schools

Other schools in Scottsdale Unified District (4240)
Other schools in SCOTTSDALE
Other Mountainside Middle schools

One other US public school is named Mountainside Middle. Mountainside Middle School is the 2nd largest of the 2.

Nearby schools

Frequently asked questions

About Mountainside Middle School
How large is Mountainside Middle School?
Mountainside Middle School enrolls approximately 518 students in grades 06-08.
Is Mountainside Middle School an elementary, middle, or high school?
Mountainside Middle School is a middle school covering grades 06-08.
How many teachers does Mountainside Middle School have?
Mountainside Middle School employs 32 FTE teachers, for a student-to-teacher ratio of 16.2:1.
What is the student diversity at Mountainside Middle School?
Student demographics at Mountainside Middle School are roughly 71% White, 11% Hispanic, 5% Black, 8% Asian, 3% Two or more.
What district is Mountainside Middle School in?
Mountainside Middle School is part of Scottsdale Unified District (4240).
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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