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Granite Mountain Charter

Public, Charter, Virtual, Alternative Grades K-12
3413th
SchoolDigger Rank ?
of 5,817 California Alternative Schools
Better than 41% of California alternative schools
Summary

Granite Mountain Charter is a K–12 alternative school in Lucerne Valley, California, serving 4,393 students. Its 2025–2026 results show a notable contrast: the graduation rate was 97%, compared with 88% statewide, and chronic absenteeism was just 1%, compared with 18% statewide. Most importantly, graduation and attendance are strong even though the school’s all-grades ELA and math proficiency remain below state averages.

Science is Granite’s strongest tested subject compared with California: 39% of students were proficient, versus 36% statewide. ELA proficiency was 47% versus 49% statewide, and math was 32% versus 38%. Among the three nearby schools, Granite ranked second in all three subjects—not the highest, but well ahead of High Desert Premier Academy and relatively close to Southern California Flex Academy. For example, Granite’s ELA result was 47%, compared with Flex’s 42% and High Desert’s 10%; in math, Granite’s 32% was below Flex’s 36% but above High Desert’s 1%.

Results have improved since 2022–2023: ELA rose 6 points, math 7 points, and science 10 points. Granite has gained ground on the state over that period, although its ELA and math gaps widened slightly in the latest year; science moved from below the state average to above it. The school is much larger than its nearby comparisons, and its 2024–2025 student-teacher ratio was also higher: 26.7, versus 20.7 at Flex and 14.9 at High Desert. In 2024–2025, 40% of Granite students were reported as free/reduced lunch eligible, compared with 76% at Flex and 81% at High Desert; California provides free meals to all students statewide, so eligibility shares do not indicate who can receive a meal. No district-level test comparison for Granite Mountain Charter District, or Granite’s SchoolDigger rank and star rating, was supplied.

4,393
Students ?
26.7
Student/teacher ratio ?
$14,112
Per pupil spending ?
39.9%
Free/reduced lunch eligible (2024-25) ?
All students in California receive free school meals.
15%
Kindergartners with all required immunizations (2024-25)
Exemptions: 0% (any vaccine)
 8560 Aliento Rd.
       Lucerne Valley, CA  92356-8133

(909) 906-3593

District: Granite Mountain Charter District

Racial breakdown:

Hispanic:
48.2%
White:
34.8%
Two or more races:
8.5%
more
 See top rated California elementary schools

 Compare Granite Mountain Charter to nearby alternative schools!
At a glance
▲ Ranking trend: Improving — 58th percentile in 2023 → 84th in 2026
Strengths
✓97% graduate in 4 years — above the California average (88%)
✓Ranking is trending up — up 26 percentile points since 2023
Worth a look
!Some student groups rank well below the school's overall statewide standing
!Large classes — about 27 students per teacher
Students meeting standards (2025-2026) ?
This school39%
California avg42%
Elementary school
3,413th of 5,817
California public elementary schools ?
Bottom 41%▼ down 9 pts since 2021
From top 50% (2021) to bottom 41% (2026)
See the entire ranking list of California Elementary Schools →
★★★★★
SchoolDigger rating ?
Middle school
1,104th of 2,740
California public middle schools ?
Top 40%▲ up 14 pts since 2021
From bottom 46% (2021) to top 40% (2026)
See the entire ranking list of California Middle Schools →
★★★★★
SchoolDigger rating ?
High school
342nd of 2,135
California public high schools ?
Top 16%▲ up 21 pts since 2021
From top 37% (2021) to top 16% (2026)
See the entire ranking list of California High Schools →
★★★★★
SchoolDigger rating ?
Statewide rank percentile over time (100 = the top-ranked school in the state; click a legend item to add a student group)
Elementary school ranking
Show full rank history (all student groups)

All Students

YearAvg scoreStatewide rankCalifornia percentileRating
202637.43413 of 581741.3%★★☆☆☆
202541.63110 of 585746.9%★★☆☆☆
202439.63197 of 586945.5%★★☆☆☆
202336.83365 of 585942.6%★★☆☆☆
202239.03162 of 588346.3%★★☆☆☆
202146.1702 of 141750.5%★★★☆☆

African American

YearAvg scoreStatewide rankCalifornia percentileRating
202643.2273 of 50846.3%★★☆☆☆
202555.1208 of 56963.4%★★★☆☆
202452.3225 of 59362.1%★★★☆☆
202361.1194 of 66170.7%★★★★☆
202272.9119 of 66382.1%★★★★☆

Asian

YearAvg scoreStatewide rankCalifornia percentileRating
202633.4898 of 121025.8%★☆☆☆☆
202538.2853 of 120329.1%★☆☆☆☆
202446.4801 of 120533.5%★★☆☆☆

Disabled

YearAvg scoreStatewide rankCalifornia percentileRating
202245.8916 of 222758.9%★★★☆☆
202164.168 of 29376.8%★★★★☆

Female

YearAvg scoreStatewide rankCalifornia percentileRating
202639.73137 of 558143.8%★★☆☆☆
202544.12826 of 559749.5%★★☆☆☆
202442.02923 of 561247.9%★★☆☆☆
202338.33121 of 560944.4%★★☆☆☆
202241.02936 of 563547.9%★★☆☆☆
202144.6632 of 126750.1%★★★☆☆

Hispanic

YearAvg scoreStatewide rankCalifornia percentileRating
202644.12740 of 509446.2%★★☆☆☆
202547.72454 of 510751.9%★★★☆☆
202447.52440 of 510752.2%★★★☆☆
202347.02424 of 508752.3%★★★☆☆
202243.52626 of 508448.3%★★☆☆☆

Homeless

YearAvg scoreStatewide rankCalifornia percentileRating
202656.0131 of 36664.2%★★★☆☆
202533.5320 of 42925.4%★☆☆☆☆

Low Socio Economic Status

YearAvg scoreStatewide rankCalifornia percentileRating
202637.23398 of 542337.3%★★☆☆☆
202541.23074 of 546043.7%★★☆☆☆
202443.02906 of 551747.3%★★☆☆☆
202333.23635 of 536332.2%★★☆☆☆
202239.53052 of 526442.0%★★☆☆☆
202157.5388 of 111065.0%★★★☆☆

Male

YearAvg scoreStatewide rankCalifornia percentileRating
202635.13457 of 560338.3%★★☆☆☆
202538.63224 of 562842.7%★★☆☆☆
202436.93284 of 564341.8%★★☆☆☆
202335.53373 of 563840.2%★★☆☆☆
202236.83217 of 566343.2%★★☆☆☆
202147.1603 of 127252.6%★★★☆☆

Multi-racial

YearAvg scoreStatewide rankCalifornia percentileRating
202618.5648 of 75313.9%★☆☆☆☆
202517.9613 of 71814.6%★☆☆☆☆
202417.5586 of 67012.5%★☆☆☆☆
202315.4596 of 66910.9%★☆☆☆☆
202215.1538 of 61011.8%★☆☆☆☆

Special Education

YearAvg scoreStatewide rankCalifornia percentileRating
202650.71078 of 292763.2%★★★☆☆
202546.71171 of 284758.9%★★★☆☆
202444.61136 of 263556.9%★★★☆☆
202351.2880 of 242063.6%★★★☆☆

White

YearAvg scoreStatewide rankCalifornia percentileRating
202615.72217 of 253612.6%★☆☆☆☆
202519.62177 of 259816.2%★☆☆☆☆
202415.62311 of 265112.8%★☆☆☆☆
202312.42418 of 26619.1%☆☆☆☆☆
202216.42358 of 272613.5%★☆☆☆☆
Middle school ranking
Show full rank history (all student groups)

All Students

YearAvg scoreStatewide rankCalifornia percentileRating
202653.11104 of 274059.7%★★★☆☆
202552.41118 of 276159.5%★★★☆☆
202443.61354 of 278351.3%★★★☆☆
202341.81401 of 278149.6%★★☆☆☆
202241.41416 of 274048.3%★★☆☆☆
202141.8484 of 89445.9%★★☆☆☆

African American

YearAvg scoreStatewide rankCalifornia percentileRating
202655.4227 of 59461.8%★★★☆☆
202543.8310 of 60949.1%★★☆☆☆
202352.0249 of 61359.4%★★★☆☆
202277.1108 of 63783.0%★★★★☆

Asian

YearAvg scoreStatewide rankCalifornia percentileRating
202647.5461 of 77740.7%★★☆☆☆

Disabled

YearAvg scoreStatewide rankCalifornia percentileRating
202252.4520 of 153166.0%★★★☆☆
202144.9145 of 35459.0%★★★☆☆

Female

YearAvg scoreStatewide rankCalifornia percentileRating
202653.5995 of 251660.5%★★★☆☆
202554.4968 of 253361.8%★★★☆☆
202445.21202 of 255152.9%★★★☆☆
202337.91391 of 253145.0%★★☆☆☆
202238.01405 of 250944.0%★★☆☆☆
202130.7506 of 73831.4%★★☆☆☆

Hispanic

YearAvg scoreStatewide rankCalifornia percentileRating
202660.6746 of 235768.3%★★★☆☆
202564.0655 of 239572.7%★★★★☆
202446.91064 of 238855.4%★★★☆☆
202347.51050 of 237455.8%★★★☆☆
202246.71089 of 235953.8%★★★☆☆

Homeless

YearAvg scoreStatewide rankCalifornia percentileRating
202689.218 of 44295.9%★★★★★

Low Socio Economic Status

YearAvg scoreStatewide rankCalifornia percentileRating
202657.8866 of 252965.8%★★★☆☆
202547.61157 of 254254.5%★★★☆☆
202448.21100 of 257957.3%★★★☆☆
202334.41565 of 253138.2%★★☆☆☆
202235.71486 of 245839.5%★★☆☆☆
202144.4364 of 72149.5%★★☆☆☆

Male

YearAvg scoreStatewide rankCalifornia percentileRating
202650.41089 of 251456.7%★★★☆☆
202548.41132 of 253455.3%★★★☆☆
202440.81322 of 255248.2%★★☆☆☆
202344.91203 of 253852.6%★★★☆☆
202244.11212 of 252752.0%★★★☆☆
202152.6324 of 76357.5%★★★☆☆

Multi-racial

YearAvg scoreStatewide rankCalifornia percentileRating
202634.9498 of 73532.2%★★☆☆☆
202532.3506 of 72630.3%★★☆☆☆
202424.8543 of 70122.5%★☆☆☆☆
202327.3500 of 67726.1%★☆☆☆☆
202219.2537 of 66519.2%★☆☆☆☆

Special Education

YearAvg scoreStatewide rankCalifornia percentileRating
202656.3497 of 160569.0%★★★☆☆
202548.1612 of 156660.9%★★★☆☆
202438.1828 of 155246.6%★★☆☆☆
202344.5665 of 153156.6%★★★☆☆

White

YearAvg scoreStatewide rankCalifornia percentileRating
202634.6966 of 149035.2%★★☆☆☆
202528.91093 of 152028.1%★☆☆☆☆
202424.71165 of 153724.2%★☆☆☆☆
202322.61205 of 154321.9%★☆☆☆☆
202221.31252 of 155519.5%★☆☆☆☆
High school ranking
Show full rank history (all student groups)

All Students

YearAvg scoreStatewide rankCalifornia percentileRating
202682.9342 of 213584.0%★★★★☆
202578.9429 of 216280.2%★★★★☆
202468.7589 of 215972.7%★★★★☆
202353.1918 of 217057.7%★★★☆☆
202257.1774 of 212363.5%★★★☆☆
202159.2476 of 129063.1%★★★☆☆

Disabled

YearAvg scoreStatewide rankCalifornia percentileRating
202247.2452 of 116161.1%★★★☆☆

Female

YearAvg scoreStatewide rankCalifornia percentileRating
202680.4336 of 186482.0%★★★★☆
202575.3440 of 190676.9%★★★★☆
202468.3527 of 191572.5%★★★★☆
202359.3693 of 191563.8%★★★☆☆
202260.7604 of 185867.5%★★★☆☆
202159.1404 of 105461.7%★★★☆☆

Hispanic

YearAvg scoreStatewide rankCalifornia percentileRating
202687.9173 of 188090.8%★★★★★
202585.5199 of 190089.5%★★★★☆
202477.6339 of 190282.2%★★★★☆
202352.8844 of 191756.0%★★★☆☆
202267.1486 of 186173.9%★★★★☆

Low Socio Economic Status

YearAvg scoreStatewide rankCalifornia percentileRating
202681.9298 of 199785.1%★★★★☆
202584.1261 of 201387.0%★★★★☆
202477.1381 of 202681.2%★★★★☆
202351.7912 of 203055.1%★★★☆☆
202257.1697 of 194364.1%★★★☆☆
202136.5745 of 112633.8%★★☆☆☆

Male

YearAvg scoreStatewide rankCalifornia percentileRating
202681.4328 of 193083.0%★★★★☆
202577.9393 of 194279.8%★★★★☆
202465.0599 of 194869.3%★★★☆☆
202339.91098 of 196344.1%★★☆☆☆
202246.1907 of 191652.7%★★★☆☆
202150.4505 of 112255.0%★★★☆☆

Multi-racial

YearAvg scoreStatewide rankCalifornia percentileRating
202671.6173 of 58870.6%★★★★☆
202562.2221 of 57761.7%★★★☆☆
202219.5430 of 51516.5%★☆☆☆☆

Special Education

YearAvg scoreStatewide rankCalifornia percentileRating
202687.5108 of 123591.3%★★★★★
202570.0240 of 125280.8%★★★★☆
202482.7132 of 121689.1%★★★★☆
202362.7278 of 119776.8%★★★★☆

White

YearAvg scoreStatewide rankCalifornia percentileRating
202660.4466 of 113058.8%★★★☆☆
202555.1537 of 115553.5%★★★☆☆
202423.5919 of 117321.7%★☆☆☆☆
202335.2792 of 119333.6%★★☆☆☆
202234.4800 of 120433.6%★★☆☆☆
How student groups rank statewide ? (each group's percentile vs the same group at other schools — higher is better; the +/- beside each compares the group with this school's overall percentile)
Elementary school
Homeless (2026)64th percentile+23 vs school
Special Education (2026)63rd percentile+22 vs school
Disabled (2022)59th percentile+13 vs school
African American (2026)46th percentile+5 vs school
Hispanic (2026)46th percentile+5 vs school
Female (2026)44th percentile~ school
Male (2026)38th percentile-3 vs school
Low Socio Economic Status (2026)37th percentile-4 vs school
Asian (2026)26th percentile-16 vs school
Multi-racial (2026)14th percentile-27 vs school
White (2026)13th percentile-29 vs school
Middle school
Homeless (2026)96th percentile+36 vs school
Special Education (2026)69th percentile+9 vs school
Hispanic (2026)68th percentile+9 vs school
Disabled (2022)66th percentile+18 vs school
Low Socio Economic Status (2026)66th percentile+6 vs school
African American (2026)62nd percentile~ school
Female (2026)60th percentile~ school
Male (2026)57th percentile-3 vs school
Asian (2026)41st percentile-19 vs school
White (2026)35th percentile-25 vs school
Multi-racial (2026)32nd percentile-27 vs school
High school
Special Education (2026)91st percentile+7 vs school
Hispanic (2026)91st percentile+7 vs school
Low Socio Economic Status (2026)85th percentile~ school
Male (2026)83rd percentile~ school
Female (2026)82nd percentile~ school
Multi-racial (2026)71st percentile-13 vs school
Disabled (2022)61st percentile~ school
White (2026)59th percentile-25 vs school
By subject vs California (2025-2026) ?
English Language Arts/Literacy47%-3 vs state
Science39%+3 vs state
Mathematics32%-6 vs state

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Frequently Asked Questions about Granite Mountain Charter

In the 2024-25 school year, 4,393 students attended Granite Mountain Charter.

Granite Mountain Charter ranks 3413th of 5817 California alternative schools. SchoolDigger rates this school 2 stars out of 5.

Students at Granite Mountain Charter are 48% Hispanic, 35% White, 8% Two or more races, 4% Asian, 3% African American.

Rate Granite Mountain Charter!



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Schools in Lucerne Valley, CA

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Latest California data All new data »
2024–25 school spending data (updated)NewNov 2, 2026
2013–14 through 2024–25 immunization rates (updated)Oct 19, 2026
2025–26 attendance data, dropout rates & graduation ratesOct 15, 2026
2025–26 CAST, CSA Spanish & Smarter Balanced Assessments scoresOct 15, 2026


SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the California Department of Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.

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