Enrollment
203
Combined
STATE 550
SCHOOL COMMUNITY·KEYSTONE MONTESSORI CHARTER SCHOOL INC. (10878)·NCES 040016501755
Keystone Montessori Charter School
1025 E LIBERTY LN, PHOENIX, AZ 85048 · (480) 460-7312 · Maricopa County
GRADES 01–09COMBINED11-CITYCHARTERREGULAR SCHOOL203 STUDENTS
B-
allk12 Grade
Scored higher than 50% of Arizona public K-12 schools
- BTest 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.
- DThree-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 K-12 schools
Student : Teacher
15.6:1
13 FTE teachers
STATE 21.4:1
Free / Reduced Lunch
,
Title I proxy
STATE 95%
Community
0
0 members
Enrollment and student:teacher ratio compared against other combined schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 1 | 29 | 14% |
| Grade 2 | 42 | 21% |
| Grade 3 | 20 | 10% |
| Grade 4 | 33 | 16% |
| Grade 5 | 28 | 14% |
| Grade 6 | 21 | 10% |
| Grade 7 | 14 | 7% |
| Grade 8 | 16 | 8% |
This year's 1st grade class (29) is 81% larger than its 8th grade class (16).
Student demographics
67%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
STATE 65% · US 70%
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
QUIET COMMUNITY
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START A DISCUSSIONTest scores
AASA 2024-25 . % PassingEnglish Language Arts
67.0%
AZ avg 45.4% . -14.0pp since 2017
Math
34.0%
AZ avg 37.8% . -39.0pp since 2017
What this means: On the AASA, Arizona's statewide test, about 67 of every 100 students at this school read and write at grade level and about 34 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 14 points since 2017, while math scores are down about 39 points.
AASA results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 67.0% | 34.0% |
| 2023-24 | 65.0% | 35.0% |
| 2022-23 | 62.0% | 45.0% |
| 2021-22 | 79.0% | 50.0% |
| 2020-21 | 67.0% | 58.0% |
| 2018-19 | 82.0% | 74.0% |
| 2017-18 | 81.0% | 73.0% |
% Passing, all students and all tested grades.
Source: AASA. All students, all grades. See all years and grades →
Where Keystone Montessori Charter School ranks
Among K-12 schools| Measure | This school | In Arizona | In Maricopa County |
|---|---|---|---|
| Math proficiency ranked highest first | 34.0% | #9 of 14 no change | #6 of 7 no change |
| Reading proficiency ranked highest first | 67.0% | #4 of 14 no change | #3 of 7 no change |
| 3-year test score change ranked biggest drop first | -14.0pp | #2 of 12 | #2 of 6 |
| Enrollment ranked largest first | 203 | #17 of 36 | #7 of 13 |
| Students per teacher ranked fewest first | 15.6:1 | #9 of 17 | #3 of 7 |
| Diversity index ranked most diverse first | 67.2% | #2 of 17 | #1 of 7 |
| Enrollment change since 2017-18 ranked steepest decline first | -3.8% | #10 of 10 | N/A |
Ranked against other public K-12 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 2024-25Enrollment
203
+9 (+5%) vs 2020
+62% since 2000-01, when it was 125
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 203 | 13 | 15.6:1 | N/A |
| 2023-24 | 197 | N/A | N/A | N/A |
| 2022-23 | 179 | N/A | N/A | N/A |
| 2020-21 | 194 | N/A | N/A | N/A |
| 2017-18 | 211 | N/A | N/A | N/A |
| 2015-16 | 235 | N/A | N/A | N/A |
| 2010-11 | 203 | N/A | N/A | 0% (0) |
| 2000-01 | 125 | N/A | N/A | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Keystone Montessori Charter School.
About Keystone Montessori Charter School
In PHOENIX, Arizona, part of Maricopa County, Keystone Montessori Charter School is a combined-grade school. The latest federal count shows 203 students in grades 1 through 9. Against the 550-student average for combined schools in Arizona, enrollment here is 63% lower.
Keystone Montessori Charter School falls under Keystone Montessori Charter School Inc. (10878).
Enrollment at Keystone Montessori Charter School is mixed, with White students the largest group at 45%. Other reported shares: 32% Hispanic, 12% multiracial, 5% Asian, and 4% Black. That compares with about 59% White among all Maricopa County residents. Keystone Montessori Charter School has a diversity index of 67%, compared with 70% for all US public school students.
Federal data list 13 full-time-equivalent teachers at Keystone Montessori Charter School in 2024-25, for a ratio of 15.6:1. Among combined schools in Arizona, the typical ratio is 21.4:1.
Keystone Montessori Charter School is graded B- by allk12, scoring above 50% of Arizona public K-12 schools once test results, poverty-adjusted performance, and the recent trend are combined.
Keystone Montessori Charter School is located in Maricopa County, where median household income is about $89,300, about 37% of adults have at least a bachelor's degree, and roughly 8% of residents are in poverty. Keystone Montessori Charter School is one of 1,352 public schools in Maricopa County, which together enroll about 725,139 students.
The closest public school, Kyrene de la Sierra School, is about 0.1 miles from Keystone Montessori Charter School. Within five miles are at least 8 other public schools.
The school's locale code, City: Large, means it is inside a principal city with a population of 250,000 or more. Keystone Montessori Charter School is run as a public charter school.
The 2024-25 enrollment of 203 was 5% higher than in 2020-21, when it was 194.
If you have questions about sports schedules, lunch menus, and spirit week at Keystone Montessori Charter School, you can post them here. Posting is open to anyone connected to the school.
Maricopa County at a glance
View full county profilePopulation
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
Related schools
Other schools in PHOENIX
- Arizona Virtual AcademyCombined · 4,476 students
- Trevor Browne High SchoolHigh · 2,850 students
- Desert Vista High SchoolHigh · 2,761 students
- Maryvale High SchoolHigh · 2,532 students
- Pinnacle High SchoolHigh · 2,430 students
- Sunnyslope High SchoolHigh · 2,322 students
Nearby schools
- Kyrene de la Sierra School0.1 mi · 518
- Kyrene de los Cerritos School1.2 mi · 395
- Kyrene Altadena Middle School1.2 mi · 857
- Kyrene de la Estrella Elementary School1.9 mi · 421
- Kyrene Akimel A-Al Middle School2.1 mi · 792
- Kyrene Monte Vista School2.2 mi · 484
Frequently asked questions
About Keystone Montessori Charter SchoolWhat is the total enrollment at Keystone Montessori Charter School?
Keystone Montessori Charter School enrolls approximately 203 students in grades 01-09.
Is Keystone Montessori Charter School an elementary, middle, or high school?
Keystone Montessori Charter School is a combined-grade school covering grades 01-09.
How many teachers does Keystone Montessori Charter School have?
Keystone Montessori Charter School employs 13 FTE teachers, for a student-to-teacher ratio of 15.6:1.
How diverse is Keystone Montessori Charter School?
Keystone Montessori Charter School reports a student body of 45% White, 32% Hispanic, 4% Black, 5% Asian, 12% Two or more.
What district is Keystone Montessori Charter School in?
Keystone Montessori Charter School is part of Keystone Montessori Charter School Inc. (10878).
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.