Forest Charter: english

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	47,260	2398.2	− 2432	−33.8	× 23 / 344	−2.3
4	47,263	2451.2	− 2473	−21.8	× 27 / 344	−1.7
5	47,264	2458.9	− 2502	−43.1	× 32 / 344	−4
6	47,266	2541.3	− 2531	10.3	× 39 / 344	1.2
7	47,269	2532.1	− 2552	−19.9	× 45 / 344	−2.6
8	47,270	2558.8	− 2567	−8.2	× 70 / 344	−1.7
11	47,273	2588.2	− 2583	5.2	× 108 / 344	1.6
Sum, rounded to a whole point						−9

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	43,938	2429.3	− 2432	−2.7	× 29 / 340	−0.2
4	43,939	2427.6	− 2473	−45.4	× 33 / 340	−4.4
5	43,942	2509.8	− 2502	7.8	× 36 / 340	0.8
6	43,943	2495.3	− 2531	−35.7	× 46 / 340	−4.8
7	43,946	2572.2	− 2552	20.2	× 52 / 340	3.1
8	43,948	2567.1	− 2567	0.1	× 56 / 340	0
11	43,949	2601.6	− 2583	18.6	× 88 / 340	4.8
Sum, rounded to a whole point						−1

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	45,008	2398.8	− 2432	−33.2	× 26 / 331	−2.6
4	45,010	2431.9	− 2473	−41.1	× 33 / 331	−4.1
5	45,013	2501.5	− 2502	−0.5	× 41 / 331	−0.1
6	45,014	2536.7	− 2531	5.7	× 55 / 331	0.9
7	45,017	2539.6	− 2552	−12.4	× 54 / 331	−2
8	45,018	2579.5	− 2567	12.5	× 62 / 331	2.3
11	45,020	2599.4	− 2583	16.4	× 60 / 331	3
Sum, rounded to a whole point						−3

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	45,022	2382.3	− 2432	−49.7	× 30 / 385	−3.9
4	45,023	2463.4	− 2473	−9.6	× 35 / 385	−0.9
5	45,026	2468.3	− 2502	−33.7	× 50 / 385	−4.4
6	45,027	2514.2	− 2531	−16.8	× 55 / 385	−2.4
7	45,030	2547.1	− 2552	−4.9	× 70 / 385	−0.9
8	45,031	2555.9	− 2567	−11.1	× 69 / 385	−2
11	45,034	2581.7	− 2583	−1.3	× 76 / 385	−0.3
Sum, rounded to a whole point						−15

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	45,147	2427.9	− 2432	−4.1	× 37 / 403	−0.4
4	45,148	2445.7	− 2473	−27.3	× 40 / 403	−2.7
5	45,149	2508.2	− 2502	6.2	× 38 / 403	0.6
6	45,150	2511.8	− 2531	−19.2	× 54 / 403	−2.6
7	45,151	2538.4	− 2552	−13.6	× 68 / 403	−2.3
8	45,152	2570.0	− 2567	3	× 85 / 403	0.6
11	45,153	2644.3	− 2583	61.3	× 81 / 403	12.3
Sum, rounded to a whole point						6

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	44,872	2399.3	− 2432	−32.7	× 46 / 379	−4
4	44,873	2466.3	− 2473	−6.7	× 38 / 379	−0.7
5	44,874	2491.9	− 2502	−10.1	× 50 / 379	−1.3
6	44,875	2521.6	− 2531	−9.4	× 51 / 379	−1.3
7	44,876	2533.3	− 2552	−18.7	× 55 / 379	−2.7
8	44,877	2586.3	− 2567	19.3	× 68 / 379	3.5
11	44,878	2617.8	− 2583	34.8	× 71 / 379	6.5
Sum, rounded to a whole point						0

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	44,848	2437.5	− 2432	5.5	× 46 / 412	0.6
4	44,849	2454.6	− 2473	−18.4	× 56 / 412	−2.5
5	44,850	2497.8	− 2502	−4.2	× 50 / 412	−0.5
6	44,851	2502.1	− 2531	−28.9	× 51 / 412	−3.6
7	44,852	2564.1	− 2552	12.1	× 59 / 412	1.7
8	44,853	2536.2	− 2567	−30.8	× 68 / 412	−5.1
11	44,854	2591.1	− 2583	8.1	× 82 / 412	1.6
Sum, rounded to a whole point						−8

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	44,683	2378.9	− 2432	−53.1	× 43 / 417	−5.5
4	44,684	2445.9	− 2473	−27.1	× 49 / 417	−3.2
5	44,685	2477.4	− 2502	−24.6	× 54 / 417	−3.2
6	44,686	2503.1	− 2531	−27.9	× 56 / 417	−3.7
7	44,687	2531.0	− 2552	−21	× 70 / 417	−3.5
8	44,688	2554.8	− 2567	−12.2	× 74 / 417	−2.2
11	44,689	2579.2	− 2583	−3.8	× 71 / 417	−0.6
Sum, rounded to a whole point						−22

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	44,423	2388.9	− 2432	−43.1	× 47 / 444	−4.6
4	44,424	2439.0	− 2473	−34	× 56 / 444	−4.3
5	44,425	2468.9	− 2502	−33.1	× 58 / 444	−4.3
6	44,426	2483.5	− 2531	−47.5	× 70 / 444	−7.5
7	44,427	2538.3	− 2552	−13.7	× 57 / 444	−1.8
8	44,428	2553.6	− 2567	−13.4	× 80 / 444	−2.4
11	44,429	2587.9	− 2583	4.9	× 76 / 444	0.8
Sum, rounded to a whole point						−24

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −9, −1, −3, −15, 6, 0, −8, −22, −24 → −8.4
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 8 · 2016→2017: 2 · 2017→2018: 12 · 2018→2019: 21 · 2019→2022: 6 · 2022→2023: 8 · 2023→2024: 14 · 2024→2025: 2 → average 9.1
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 9.1 × 2.66 = 24.2. Upper limit 15.8, lower limit −32.6.

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.