Sky Mountain Charter: math

The shaded band is this school's normal range. If nothing about how it works changes, nearly every future year should land inside it. Zero means the typical student just meets the state standard. The small numbers under the years are how many students were tested.

Measured against the grade bars

The state's math test uses one scale for every grade, so a score means the same thing in grade 3 as in grade 11.

3rd The average 3rd grader scores 43 points under the grade 3 bar. 2393 vs. 2436.
4th The average 4th grader scores 45 points under the grade 4 bar. 2440 vs. 2485.
5th The average 5th grader scores just under the grade 4 bar. 2478 vs. 2485. The 5th-grade bar is 2528.
6th The average 6th grader scores 37 points under the grade 5 bar. 2491 vs. 2528. The 6th-grade bar is 2552.
7th The average 7th grader scores 10 points under the grade 6 bar. 2542 vs. 2552. The 7th-grade bar is 2567.
8th The average 8th grader scores 11 points under the grade 7 bar. 2556 vs. 2567. The 8th-grade bar is 2586.
11th The average 11th grader meets the grade 11 bar. 2633 vs. 2628.

2026 results. "Meets standard" is the state's mark for being on track for that grade.

Step 1 · Each year's result

For each grade tested, take the average (mean) scale score from the California Department of Education's results file, and subtract the lowest score that counts as "Standard Met" for that grade. That is the grade's distance from standard. Weight each grade by its share of the students tested, then add the grades up. Grades where the state hides the average because ten or fewer students tested are left out entirely.

2015 from sb_ca2015_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	69,476	2390.5	− 2436	−45.5	× 267 / 1346	−9
4	69,479	2443.9	− 2485	−41.1	× 262 / 1346	−8
5	69,480	2470.3	− 2528	−57.7	× 243 / 1346	−10.4
6	69,483	2494.0	− 2552	−58	× 209 / 1346	−9
7	69,484	2525.7	− 2567	−41.3	× 187 / 1346	−5.7
8	69,487	2523.4	− 2586	−62.6	× 147 / 1346	−6.8
11	69,488	2530.8	− 2628	−97.2	× 31 / 1346	−2.2
Sum, rounded to a whole point						−51

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	64,398	2394.4	− 2436	−41.6	× 180 / 1031	−7.3
4	64,399	2428.0	− 2485	−57	× 194 / 1031	−10.7
5	64,401	2458.5	− 2528	−69.5	× 189 / 1031	−12.7
6	64,403	2486.6	− 2552	−65.4	× 174 / 1031	−11
7	64,406	2534.9	− 2567	−32.1	× 147 / 1031	−4.6
8	64,408	2521.6	− 2586	−64.4	× 121 / 1031	−7.6
11	64,409	2568.1	− 2628	−59.9	× 26 / 1031	−1.5
Sum, rounded to a whole point						−55

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	66,206	2379.9	− 2436	−56.1	× 170 / 1129	−8.4
4	66,207	2428.8	− 2485	−56.2	× 187 / 1129	−9.3
5	66,210	2448.5	− 2528	−79.5	× 199 / 1129	−14
6	66,211	2470.8	− 2552	−81.2	× 198 / 1129	−14.2
7	66,213	2519.3	− 2567	−47.7	× 177 / 1129	−7.5
8	66,216	2527.6	− 2586	−58.4	× 150 / 1129	−7.8
11	66,218	2563.0	− 2628	−65	× 48 / 1129	−2.8
Sum, rounded to a whole point						−64

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	66,276	2374.1	− 2436	−61.9	× 137 / 999	−8.5
4	66,277	2419.4	− 2485	−65.6	× 135 / 999	−8.9
5	66,280	2454.2	− 2528	−73.8	× 158 / 999	−11.7
6	66,281	2476.5	− 2552	−75.5	× 176 / 999	−13.3
7	66,284	2516.0	− 2567	−51	× 177 / 999	−9
8	66,285	2522.1	− 2586	−63.9	× 152 / 999	−9.7
11	66,288	2530.5	− 2628	−97.5	× 64 / 999	−6.2
Sum, rounded to a whole point						−67

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	66,668	2390.1	− 2436	−45.9	× 111 / 988	−5.2
4	66,669	2419.9	− 2485	−65.1	× 135 / 988	−8.9
5	66,670	2439.6	− 2528	−88.4	× 132 / 988	−11.8
6	66,671	2462.6	− 2552	−89.4	× 168 / 988	−15.2
7	66,672	2492.2	− 2567	−74.8	× 174 / 988	−13.2
8	66,673	2506.4	− 2586	−79.6	× 170 / 988	−13.7
11	66,674	2536.8	− 2628	−91.2	× 98 / 988	−9
Sum, rounded to a whole point						−77

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	65,251	2460.9	− 2436	24.9	× 28 / 159	4.4
4	65,252	2455.2	− 2485	−29.8	× 26 / 159	−4.9
5	65,253	2470.1	− 2528	−57.9	× 15 / 159	−5.5
6	65,254	2528.5	− 2552	−23.5	× 16 / 159	−2.4
7	65,255	2541.2	− 2567	−25.8	× 25 / 159	−4.1
8	65,256	2534.6	− 2586	−51.4	× 24 / 159	−7.8
11	65,257	2621.5	− 2628	−6.5	× 25 / 159	−1
Sum, rounded to a whole point						−21

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	66,746	2406.0	− 2436	−30	× 176 / 1166	−4.5
4	66,747	2461.5	− 2485	−23.5	× 184 / 1166	−3.7
5	66,748	2471.4	− 2528	−56.6	× 176 / 1166	−8.5
6	66,749	2514.1	− 2552	−37.9	× 166 / 1166	−5.4
7	66,750	2542.0	− 2567	−25	× 178 / 1166	−3.8
8	66,751	2522.2	− 2586	−63.8	× 171 / 1166	−9.4
11	66,752	2571.7	− 2628	−56.3	× 115 / 1166	−5.6
Sum, rounded to a whole point						−41

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	66,746	2423.3	− 2436	−12.7	× 167 / 1157	−1.8
4	66,747	2458.1	− 2485	−26.9	× 175 / 1157	−4.1
5	66,748	2499.7	− 2528	−28.3	× 186 / 1157	−4.5
6	66,749	2503.4	− 2552	−48.6	× 171 / 1157	−7.2
7	66,750	2548.5	− 2567	−18.5	× 161 / 1157	−2.6
8	66,751	2555.3	− 2586	−30.7	× 174 / 1157	−4.6
11	66,752	2577.0	− 2628	−51	× 123 / 1157	−5.4
Sum, rounded to a whole point						−30

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	66,732	2412.8	− 2436	−23.2	× 177 / 1225	−3.4
4	66,733	2445.0	− 2485	−40	× 183 / 1225	−6
5	66,734	2476.2	− 2528	−51.8	× 205 / 1225	−8.7
6	66,735	2508.9	− 2552	−43.1	× 196 / 1225	−6.9
7	66,736	2525.4	− 2567	−41.6	× 179 / 1225	−6.1
8	66,737	2549.5	− 2586	−36.5	× 160 / 1225	−4.8
11	66,738	2602.5	− 2628	−25.5	× 125 / 1225	−2.6
Sum, rounded to a whole point						−38

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	66,476	2410.7	− 2436	−25.3	× 236 / 1381	−4.3
4	66,477	2449.4	− 2485	−35.6	× 192 / 1381	−4.9
5	66,478	2468.7	− 2528	−59.3	× 197 / 1381	−8.5
6	66,479	2495.5	− 2552	−56.5	× 200 / 1381	−8.2
7	66,480	2535.0	− 2567	−32	× 207 / 1381	−4.8
8	66,481	2539.2	− 2586	−46.8	× 196 / 1381	−6.6
11	66,482	2599.0	− 2628	−29	× 153 / 1381	−3.2
Sum, rounded to a whole point						−41

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	66,454	2393.3	− 2436	−42.7	× 208 / 1501	−5.9
4	66,455	2440.2	− 2485	−44.8	× 246 / 1501	−7.3
5	66,456	2477.5	− 2528	−50.5	× 209 / 1501	−7
6	66,457	2491.1	− 2552	−60.9	× 228 / 1501	−9.3
7	66,458	2542.3	− 2567	−24.7	× 222 / 1501	−3.7
8	66,459	2555.6	− 2586	−30.4	× 222 / 1501	−4.5
11	66,460	2633.0	− 2628	5	× 166 / 1501	0.6
Sum, rounded to a whole point						−37

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −51, −55, −64, −67, −77, −21, −41, −30, −38, −41, −37 → −47.5
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 4 · 2016→2017: 9 · 2017→2018: 3 · 2018→2019: 10 · 2019→2021: 56 · 2021→2022: 20 · 2022→2023: 11 · 2023→2024: 8 · 2024→2025: 3 · 2025→2026: 4 → average 12.8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 12.8 × 2.66 = 34. Upper limit −13.5, lower limit −81.5.

Why 2.66? It is the standard factor from quality control, the work of Walter Shewhart and W. Edwards Deming. It turns "how much the result typically changes in a year" into "how far it can wander by chance alone".

Years with no result (no state tests were given in spring 2020) are skipped: the year-to-year change runs from the last year with a result to the next one.

Step 3 · Free or reduced-price meals

The share of enrolled students eligible for free or reduced-price meals. From 2014–15, 2015–16, 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.