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Average

#4051 of 9,539 schools in CA

Top 43% in state

Sky Mountain Charter

School · Sky Mountain Charter District

4535 Missouri Flat Rd. Ste. 1A, Placerville, CA 95667

Charter

Enrollment

2,360

Student-Teacher

23.8:1

Score

6.7

Grades

Kindergarten – 12th

Data vintage2022-23

How this school compares

California schools

#4,051 of 9,539

In Placerville

#5 of 17

public schools

Academic growth

9.9 / 10

Excellent

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Sky Mountain Charter

6.7/10

School in Placerville · grades Kindergarten – 12th. Start here, then compare fit against nearby and district options.

Independence Continuation

4.4/10

0.4 mi away. Use as a geographic alternative in the same move search.

Herbert C. Green Middle

4.2/10

0.7 mi away. Use as a geographic alternative in the same move search.

About Sky Mountain Charter

Sky Mountain Charter is a public school in Placerville, CA, part of Sky Mountain Charter District. Sky Mountain Charter serves approximately 2,360 students, and covers grades Kindergarten-12th, and has a 23.8:1 student-teacher ratio. Sky Mountain Charter has a current MySchoolScout rating of 6.7 out of 10 and ranks #4,051 of 9,539 schools in CA.

Structured state assessment records for Sky Mountain Charter show 35% math proficiency (multi-year average, 2018-2024) and 52% reading/ELA proficiency (multi-year average, 2018-2024).

What's said publicly about Sky Mountain Charter

Sources: School's website

Synthesized from public, attributable sources. Updated April 2026. Reviewed for accuracy.

Sky Mountain Charter School is a tuition-free public charter school in California that serves students from Transitional Kindergarten through 12th grade 1 . The school has been supporting individualized learning since 2007 and utilizes an independent study, distance learning, and homeschool model 1 . It is accredited and offers personalized learning plans designed through a Curriculum Wizard, allowing families to use instructional funds to purchase products and services from over 2,000 vendors 1 . The curriculum includes hundreds of A-G course options, multiple high school pathways, and access to iReady targeted instruction 1 . Enrichment opportunities include monthly field trips across California, online supplemental courses taught by content experts, and interactive in-person events 1 . The school maintains a well-stocked curriculum library and provides summer school for high school students 1 . Administrative locations include a corporate office, parent support lines, and curriculum libraries in Boulder Creek and Nicolaus, with postal mail handled in Placerville 1 .
Sources (1)
  1. www.skymountaincs.org
Generated by AI from public sources. Every claim is grounded in a cited source. Report inaccuracy
How it compares0.4 pts above CA schools
  • This school 6.7 · Average
  • CA avg 6.3

What Parents Should Know

Sky Mountain Charter is a large school: 2,360 students. Size usually brings more course choices and activities than a smaller school can staff, but kids can also blend into the crowd. Ask how the school keeps students known and supported.

Sky Mountain Charter runs 23.8:1 students to teachers, above the national average. That often means bigger classes. Ask how the school supports kids who need extra help, and whether there are teaching assistants or small-group time.

Sky Mountain Charter is a charter school: publicly funded, but run with more independence than a traditional district school. Many charters are built around a specific model or focus, so it's worth understanding this one's mission, how enrollment works, and how it differs from the district schools nearby.

Score Breakdown

Full Profile · 4/4 metrics
Student Progress9.9Excellent25%
Year-over-year improvement in student test scores.
View breakdown
Years of Data6
Annual Change+2.59 pts/yr
Data Period2018–2024
TrendImproving
Academics6.3Average25%
Student proficiency on state tests, adjusted for community poverty levels.
View breakdown
Math Proficiency35.4% (2024 CAASPP)
Reading/ELA Proficiency53.5% (2024 CAASPP)
Math vs. State Avg-10.4 pts
Reading vs. State Avg+10.7 pts
Overall Proficiency44% (2024 CAASPP, Math+ELA)
Expected (poverty-adj.)54% (model expectation from 2024 CAASPP)
vs. Expected-9.8 pts
Adjusted Percentile47th
College Readiness5.0Average30%
Graduation rates, AP course participation, and IB availability.
View breakdown
4-Year Graduation Rate92%
AP Participation0.6%
IB ProgramNo
Resources & Environment5.9Average20%
Student-teacher ratio, per-pupil spending, and attendance.
View breakdown
Student-Teacher Ratio23.8:1
Per-Pupil Spending$12,374
Chronic Absenteeism2.1%

Sky Mountain Charter — Students at Sky Mountain Charter score 44% proficient, which is below what's typical for similar communities (expected: 54%).

How we calculate scores →

Equity & Diversity

Shown separately, not included in overall score

Free/Reduced Lunch

35.8%

Students qualifying for federal meal assistance

Test Scores CA CAASPP (2023-24)

Math Proficiency 34.6% (multi-year average, 2018-2024)
School
State
35.7% (2024 CAASPP)
ELA Proficiency 52.4% (multi-year average, 2018-2024)
School
State
47.1% (2024 CAASPP)

Based on 26 test records from CA state assessments. About our data

Proficiency Trend

↑ Improving

Average proficiency (% at or above grade level) across Math & ELA over time.

2018
Math
23%
ELA
39%
2019
Math
23%
ELA
39%
2020*
Math
42%
ELA
57%
2021*
Math
42%
ELA
57%
2022
Math
34.5%
ELA
53.7%
2024
Math
35.7%
ELA
54.5%

* 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: 9.9/10.

How Sky Mountain Charter Compares

See how Sky Mountain Charter performs across key quality dimensions compared to state benchmarks.

Overall Score
6.7/10
58th percentile in CA
Academic
6.3/10
Average
Growth
9.9/10
Excellent
Environment
5.9/10
Average
AP Courses
4
State avg: 2.6
Advanced STEM
5/5
Subjects offered

Funding & Resources

Free/Reduced Lunch
Students eligible for subsidized meals
36%
Teaching Staff
24:1 student-teacher ratio
99 teachers
Chronic Absenteeism
Students missing 15+ days per year (SY 2022-23)
2.1%

Programs & Offerings

AP/IB Programs4 AP courses offered
0.6% participation·State avg: 2.6 AP courses·CRDC 2021-22
Advanced STEM Courses5 of 5 advanced subjects offered
Algebra II, Advanced Math, Calculus, Chemistry, Physics·CRDC 2021-22

Data as of 2021-22 · Source: CRDC via Urban Institute · Learn more

Location

4535 Missouri Flat Rd. Ste. 1A, Placerville, CA 95667

Nearby Alternatives

Families considering Sky Mountain Charter may also want to explore other schools in the area. Charter Community School Home Study Academy (rated 7.2/10, 2.9 miles away), which scores slightly higher. Additionally, El Dorado Co Office of Ed Special Ed Programs (rated 4.2/10, 2.9 miles away), a more accessible option. For more schools in Placerville, see our Placerville schools guide .

Nearby Schools

20 within 5.2 mi
School Distance Rating
Independence Continuation Placerville 0.4 mi 4.4
Herbert C. Green Middle Placerville 0.7 mi 4.2
SUMMITVIEW RANCH ACADEMY Placerville 1.0 mi
Blaise Pascal School El Dorado 1.6 mi
Pacific Crest Academy El Dorado 1.7 mi 7.8
Union Mine High El Dorado 1.9 mi 5.5
SUMMITVIEW ACADEMY Placerville 2.2 mi 6.4
El Dorado High Placerville 2.4 mi 5.8
Edwin Markham Middle Placerville 2.5 mi 6.1
COUNTRY DAY MONTESSORI Placerville 2.6 mi
Sierra Elementary Placerville 2.6 mi 5.4
Charter Alternative Program (CAP) Placerville 2.8 mi 7.7
Charter Community School Home Study Academy Placerville 2.9 mi 7.2
El Dorado Co Office of Ed Special Ed Programs Placerville 2.9 mi 4.2
Indian Creek Elementary Placerville 2.9 mi 3.9
Louisiana Schnell Elementary Placerville 3.5 mi 2.4
Roundtree Acadamy Placerville 3.6 mi
EL DORADO ADVENTIST SCHOOL Placerville 3.9 mi 5.4
El Dorado Adventist Placerville 3.9 mi
California Montessori Project-Shingle Springs Campus Carmichael 5.2 mi 7.6

Neighborhood Census ACS (2019-2023)

Census data for ZIP 95667 (ACS 2019-2023 5-Year Estimates) · Data sources

Median Income

$90,499

Median Home Value

$527,900

Median Rent

$1,408/mo

Population

36,286

College Educated

28.6%

Homeownership

75.2%

Avg Commute

27.3 min

Poverty Rate

9.9%

Median Age

49.1

Similar Schools

Schools in the same state with comparable level, size, and ratings

School Rating
Natomas Charter Sacramento, CA 6.7
Ocean Grove Charter Placerville, CA 6.8
South Sutter Charter Placerville, CA 6.8
Academy for Academic Excellence Apple Valley, CA 6.6
Gorman Learning Center San Bernardino/Santa Clarita Redlands, CA 6.5
John Adams Academy - Roseville Roseville, CA 6.9

Frequently Asked Questions

Common questions about Sky Mountain Charter

What grades does Sky Mountain Charter serve?

Sky Mountain Charter serves students in grades Kindergarten through 12th.

How many students attend Sky Mountain Charter?

Sky Mountain Charter has an enrollment of approximately 2,360 students.

What is the student-teacher ratio at Sky Mountain Charter?

The student-teacher ratio at Sky Mountain Charter is 23.8:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.

How does Sky Mountain Charter rank in CA?

Sky Mountain Charter ranks #4,051 of 9,539 schools in CA.

What is Sky Mountain Charter's MySchoolScout rating?

Sky Mountain Charter has a current MySchoolScout rating of 6.7 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.

What are the test scores at Sky Mountain Charter?

Based on loaded state assessment records, Sky Mountain Charter has 35% math proficiency (multi-year average, 2018-2024) and 52% reading/ELA proficiency (multi-year average, 2018-2024).

Is Sky Mountain Charter a charter school?

Yes, Sky Mountain Charter is a charter school. Charter schools are publicly funded but independently operated, often with more flexibility in curriculum and teaching methods.

Is Sky Mountain Charter a Title I school?

No, Sky Mountain Charter is not currently a Title I school.

What does the Free & Reduced Lunch percentage mean for Sky Mountain Charter?

35.8% of students at Sky Mountain Charter qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.

11 schools nearby View map →

Neighborhood Context

Walk Score
52 Somewhat Walkable
Bike Score
39 Somewhat Bikeable

Powered by Walk Score

Quick Facts NCES CCD (SY 2022-23)

Grades
Kindergarten – 12th
Enrollment
2,360
Student-Teacher Ratio
23.8:1
Teachers (FTE)
99
Free/Reduced Lunch
35.8%
Type
regular
Setting
Fringe Town
County
El Dorado County
Chronic Absenteeism (SY 2022-23)
2.1%
4-Year Graduation
92.0%

District

Sky Mountain Charter District
District Enrollment
2,360
Schools in District
1
Per-Pupil Spending
$12,374
District Rank
#1 of 1

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