Community Collaborative 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.

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	63,172	2404.7	− 2436	−31.3	× 54 / 263	−6.4
4	63,174	2425.5	− 2485	−59.5	× 28 / 263	−6.3
5	63,176	2450.1	− 2528	−77.9	× 31 / 263	−9.2
6	63,178	2475.8	− 2552	−76.2	× 21 / 263	−6.1
7	63,180	2482.0	− 2567	−85	× 26 / 263	−8.4
8	63,182	2460.6	− 2586	−125.4	× 27 / 263	−12.9
11	63,184	2446.5	− 2628	−181.5	× 76 / 263	−52.4
Sum, rounded to a whole point						−102

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	58,610	2465.7	− 2567	−101.3	× 18 / 126	−14.5
8	58,612	2439.4	− 2586	−146.6	× 26 / 126	−30.3
11	58,613	2454.0	− 2628	−174	× 82 / 126	−113.2
Sum, rounded to a whole point						−158

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	60,308	2428.7	− 2567	−138.3	× 30 / 135	−30.7
8	60,311	2434.9	− 2586	−151.1	× 27 / 135	−30.2
11	60,313	2440.5	− 2628	−187.5	× 78 / 135	−108.3
Sum, rounded to a whole point						−169

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	60,426	2335.1	− 2436	−100.9	× 12 / 215	−5.6
4	60,427	2396.6	− 2485	−88.4	× 12 / 215	−4.9
5	60,430	2416.8	− 2528	−111.2	× 16 / 215	−8.3
7	60,434	2418.9	− 2567	−148.1	× 19 / 215	−13.1
8	60,435	2413.4	− 2586	−172.6	× 39 / 215	−31.3
11	60,438	2457.5	− 2628	−170.5	× 117 / 215	−92.8
Sum, rounded to a whole point						−156

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	60,684	2352.5	− 2436	−83.5	× 13 / 172	−6.3
4	60,685	2403.3	− 2485	−81.7	× 16 / 172	−7.6
5	60,686	2412.5	− 2528	−115.5	× 11 / 172	−7.4
6	60,687	2504.6	− 2552	−47.4	× 11 / 172	−3
7	60,688	2404.5	− 2567	−162.5	× 22 / 172	−20.8
8	60,689	2405.7	− 2586	−180.3	× 26 / 172	−27.3
11	60,690	2447.1	− 2628	−180.9	× 73 / 172	−76.8
Sum, rounded to a whole point						−149

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	60,778	2352.3	− 2436	−83.7	× 19 / 272	−5.8
4	60,779	2397.0	− 2485	−88	× 29 / 272	−9.4
5	60,780	2391.1	− 2528	−136.9	× 32 / 272	−16.1
6	60,781	2419.9	− 2552	−132.1	× 28 / 272	−13.6
7	60,782	2465.4	− 2567	−101.6	× 48 / 272	−17.9
8	60,783	2457.2	− 2586	−128.8	× 52 / 272	−24.6
11	60,784	2473.4	− 2628	−154.6	× 64 / 272	−36.4
Sum, rounded to a whole point						−124

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	60,723	2359.0	− 2436	−77	× 30 / 340	−6.8
4	60,724	2393.6	− 2485	−91.4	× 30 / 340	−8.1
5	60,725	2402.4	− 2528	−125.6	× 43 / 340	−15.9
6	60,726	2407.4	− 2552	−144.6	× 40 / 340	−17
7	60,727	2435.7	− 2567	−131.3	× 51 / 340	−19.7
8	60,728	2462.7	− 2586	−123.3	× 63 / 340	−22.8
11	60,729	2470.2	− 2628	−157.8	× 83 / 340	−38.5
Sum, rounded to a whole point						−129

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	60,670	2363.7	− 2436	−72.3	× 38 / 347	−7.9
4	60,671	2386.7	− 2485	−98.3	× 33 / 347	−9.3
5	60,672	2398.4	− 2528	−129.6	× 35 / 347	−13.1
6	60,673	2419.0	− 2552	−133	× 41 / 347	−15.7
7	60,674	2405.0	− 2567	−162	× 50 / 347	−23.3
8	60,675	2441.5	− 2586	−144.5	× 57 / 347	−23.7
11	60,676	2447.9	− 2628	−180.1	× 93 / 347	−48.3
Sum, rounded to a whole point						−141

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	60,423	2326.4	− 2436	−109.6	× 27 / 344	−8.6
4	60,424	2403.5	− 2485	−81.5	× 35 / 344	−8.3
5	60,425	2414.0	− 2528	−114	× 33 / 344	−10.9
6	60,426	2403.4	− 2552	−148.6	× 44 / 344	−19
7	60,427	2451.8	− 2567	−115.2	× 52 / 344	−17.4
8	60,428	2430.5	− 2586	−155.5	× 52 / 344	−23.5
11	60,429	2441.2	− 2628	−186.8	× 101 / 344	−54.8
Sum, rounded to a whole point						−143

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −102, −158, −169, −156, −149, −124, −129, −141, −143 → −141.2
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 56 · 2016→2017: 11 · 2017→2018: 13 · 2018→2019: 7 · 2019→2022: 25 · 2022→2023: 5 · 2023→2024: 12 · 2024→2025: 2 → average 16.4
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 16.4 × 2.66 = 43.6. Upper limit −97.6, lower limit −184.8.

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.