Granite Mountain Charter: Kids show up — absenteeism runs far below the state. But math slips between grade 3 and grade 5.
Granite Mountain Charter is a school of real strengths with one number worth interrogating. Most rating sites pick a side; we think both belong on the same page.
Granite Mountain Charter scores 41 of 100 on SchoolScope's Scope Score — the 52nd percentile of 5,744 California elementary schools (CDE CAASPP 2025).
Measures test performance, attendance, and climate — not arts, community, or your kid. How we score →
Most rating sites would stop at “36% proficient” and call it done. Granite Mountain Charter deserves a closer read. The school sits in Lucerne Valley, where one in three students qualify for free or reduced lunch — and reading the numbers without that context misreads the school.
The headline number: 0.8% chronic absenteeism — versus 17.9% statewide. Attendance is the quietest strong signal a school can post.
As a charter, Granite Mountain Charter enrolls by application, not address — the score reads the same, the enrollment path doesn't.
The story this school is actually telling
chronic absenteeism — versus 17.9% statewide. Attendance is the quietest strong signal a school can post.
math proficiency runs 35% in grade 3 against 20% in grade 5, while reading holds (42% to 45%). The state average rises by +4.5pp over the same span.
The school, grade by grade
ELA · CAASPP 2024–25Different students, same year — each bar is one grade's proficiency mix.
The honest read: the share exceeding falls 3.3pp across grades; the floor rises 2.9pp. The state average rises 4.5pp over the same span. The school's 5th graders aren't posting a wider lead than its 3rd graders. One question worth asking on a tour: are the strongest students being pushed, or coasting? A school visit and conversation with teachers will tell you more than this number.
The 5 things our score weighs
Ask the principal what changes between grade 3 and grade 5. The trajectory is the thing a tour will tell you more about than a spreadsheet.
Where the path goes
The path below follows attendance boundaries — scores shown for each next step.
K-12 Path
Granite Mountain Charter serves grades K-12 — students can complete their entire K-12 education here.
Your other options
Nearby Elementary Schools
2 within ~3 mi · avg 29
The community around it
Student demographics
3 more gaps by subject
Subgroups with fewer than 15 students are excluded for privacy. Gaps of less than 3 percentage points are not shown.
Weighted average across tested grades. Subgroups with fewer than 15 students excluded. Data: CDE CAASPP 2024-25.
Subgroup Growth by Grade
Low-income student ELA proficiency rises by 4.7pp from grade 3 to grade 5 at this school. District average: +12.1pp.
Subgroups with fewer than 10 tested students per grade are not shown.
Funding Breakdown
Neighborhood Context
Whole Child
Source: CDE SARC, 2024-25
For the data nerdsEvery number on this page
Score factors, grade-level breakdowns, subgroup proficiency, and peer comparisons.
Every number on this page
Score factors, grade-level breakdowns, subgroup proficiency, and peer comparisons.
| ELA | Tested | EXC | MET | NEAR | NOT | MET+ | +/CA |
|---|---|---|---|---|---|---|---|
| Grade 3 | 439 | 18% | 24% | 27% | 31% | 42% | −1 |
| Grade 4 | 397 | 19% | 23% | 28% | 30% | 43% | −2 |
| Grade 5 | 373 | 14% | 30% | 25% | 30% | 45% | −3 |
| Grade 6 | 346 | 11% | 35% | 27% | 27% | 47% | −0 |
| Grade 7 | 362 | 14% | 36% | 28% | 21% | 51% | +3 |
| Grade 8 | 289 | 9% | 39% | 28% | 24% | 48% | +2 |
| Grade 11 | 148 | 29% | 36% | 16% | 18% | 66% | +18 |
| Math | Tested | EXC | MET | NEAR | NOT | MET+ | +/CA |
|---|---|---|---|---|---|---|---|
| Grade 3 | 439 | 12% | 23% | 29% | 36% | 35% | −11 |
| Grade 4 | 397 | 12% | 22% | 34% | 33% | 34% | −8 |
| Grade 5 | 373 | 8% | 12% | 25% | 56% | 20% | −16 |
| Grade 6 | 346 | 14% | 15% | 28% | 42% | 29% | −6 |
| Grade 7 | 362 | 14% | 19% | 29% | 38% | 33% | −1 |
| Grade 8 | 289 | 17% | 17% | 21% | 45% | 34% | +2 |
| Grade 11 | 149 | 19% | 15% | 23% | 42% | 35% | +12 |
| Science (CAST) | Tested | EXC | MET | NEAR | NOT |
|---|---|---|---|---|---|
| Grade 5/8/11 | 815 | 10% | 28% | 52% | 10% |
CAST is tested in grades 5, 8, and once in high school — not annually. Not part of the Scope Score.
| Subgroup · ELA | Tested | MET+ | vs district | vs CA |
|---|---|---|---|---|
| Socioeconomically Disadvantaged | 948 | 39.1% | +13 | +1 |
| Hispanic/Latino | 1,129 | 44.6% | +22 | +6 |
| White | 847 | 46.5% | +13 | −15 |
| School | Dist | Scope | EXC | MET+ | Growth | Susp |
|---|---|---|---|---|---|---|
| Granite Mountain Charter ← | — | 41 | 13.8% | 36.2% | −6.2 | 0.0% |
| Southern California Flex Academy | 0 mi | 31 | 8.2% | 29.3% | −5.3 | 0.2% |
| Lucerne Valley Elementary | 3.3 mi | 27 | 6.3% | 22.0% | −3.5 | 4.2% |
| California average | — | 43 | 21.3% | 42.7% | −2.9 | 1.6% |
- — Scored here as an elementary school — other grade spans appear in the data appendix.