Chime Institute's Schwarzenegger Community: 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	33,744	2439.4	− 2432	7.4	× 77 / 423	1.3
4	33,746	2500.1	− 2473	27.1	× 78 / 423	5
5	33,748	2506.0	− 2502	4	× 84 / 423	0.8
6	33,750	2532.7	− 2531	1.7	× 64 / 423	0.3
7	33,752	2558.2	− 2552	6.2	× 65 / 423	1
8	33,754	2597.5	− 2567	30.5	× 55 / 423	4
Sum, rounded to a whole point						12

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	31,923	2417.7	− 2432	−14.3	× 80 / 429	−2.7
4	31,925	2471.6	− 2473	−1.4	× 76 / 429	−0.2
5	31,927	2517.7	− 2502	15.7	× 77 / 429	2.8
6	31,930	2534.9	− 2531	3.9	× 74 / 429	0.7
7	31,932	2557.4	− 2552	5.4	× 60 / 429	0.8
8	31,934	2555.8	− 2567	−11.2	× 62 / 429	−1.6
Sum, rounded to a whole point						0

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	32,477	2406.8	− 2432	−25.2	× 88 / 439	−5.1
4	32,478	2454.9	− 2473	−18.1	× 83 / 439	−3.4
5	32,480	2496.9	− 2502	−5.1	× 73 / 439	−0.8
6	32,482	2532.5	− 2531	1.5	× 68 / 439	0.2
7	32,484	2573.7	− 2552	21.7	× 72 / 439	3.6
8	32,487	2550.9	− 2567	−16.1	× 55 / 439	−2
Sum, rounded to a whole point						−8

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	32,504	2417.3	− 2432	−14.7	× 88 / 461	−2.8
4	32,506	2446.4	− 2473	−26.6	× 81 / 461	−4.7
5	32,508	2464.2	− 2502	−37.8	× 78 / 461	−6.4
6	32,510	2509.6	− 2531	−21.4	× 80 / 461	−3.7
7	32,512	2556.7	− 2552	4.7	× 62 / 461	0.6
8	32,514	2577.9	− 2567	10.9	× 72 / 461	1.7
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	32,681	2440.4	− 2432	8.4	× 80 / 450	1.5
4	32,682	2470.6	− 2473	−2.4	× 86 / 450	−0.5
5	32,683	2472.3	− 2502	−29.7	× 80 / 450	−5.3
6	32,684	2537.0	− 2531	6	× 67 / 450	0.9
7	32,685	2577.0	− 2552	25	× 75 / 450	4.2
8	32,686	2601.3	− 2567	34.3	× 62 / 450	4.7
Sum, rounded to a whole point						6

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	31,892	2442.2	− 2432	10.2	× 79 / 367	2.2
4	31,893	2472.8	− 2473	−0.2	× 72 / 367	0
5	31,894	2516.0	− 2502	14	× 68 / 367	2.6
6	31,895	2519.6	− 2531	−11.4	× 64 / 367	−2
7	31,896	2518.4	− 2552	−33.6	× 41 / 367	−3.8
8	31,897	2568.3	− 2567	1.3	× 43 / 367	0.2
Sum, rounded to a whole point						−1

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	32,708	2427.5	− 2432	−4.5	× 71 / 410	−0.8
4	32,709	2481.6	− 2473	8.6	× 79 / 410	1.7
5	32,710	2507.2	− 2502	5.2	× 71 / 410	0.9
6	32,711	2541.1	− 2531	10.1	× 65 / 410	1.6
7	32,712	2565.8	− 2552	13.8	× 70 / 410	2.4
8	32,713	2557.8	− 2567	−9.2	× 54 / 410	−1.2
Sum, rounded to a whole point						5

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	32,763	2434.1	− 2432	2.1	× 81 / 415	0.4
4	32,764	2474.4	− 2473	1.4	× 71 / 415	0.2
5	32,765	2531.9	− 2502	29.9	× 77 / 415	5.5
6	32,766	2528.1	− 2531	−2.9	× 55 / 415	−0.4
7	32,767	2581.7	− 2552	29.7	× 65 / 415	4.7
8	32,768	2588.0	− 2567	21	× 66 / 415	3.3
Sum, rounded to a whole point						14

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	32,631	2438.1	− 2432	6.1	× 87 / 445	1.2
4	32,632	2468.4	− 2473	−4.6	× 80 / 445	−0.8
5	32,633	2519.5	− 2502	17.5	× 74 / 445	2.9
6	32,634	2563.7	− 2531	32.7	× 73 / 445	5.4
7	32,635	2553.0	− 2552	1	× 63 / 445	0.1
8	32,636	2591.1	− 2567	24.1	× 68 / 445	3.7
Sum, rounded to a whole point						12

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	32,490	2427.7	− 2432	−4.3	× 71 / 424	−0.7
4	32,491	2482.5	− 2473	9.5	× 83 / 424	1.9
5	32,492	2504.4	− 2502	2.4	× 71 / 424	0.4
6	32,493	2534.2	− 2531	3.2	× 75 / 424	0.6
7	32,494	2593.0	− 2552	41	× 66 / 424	6.4
8	32,495	2565.7	− 2567	−1.3	× 58 / 424	−0.2
Sum, rounded to a whole point						8

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. 12, 0, −8, −15, 6, −1, 5, 14, 12, 8 → 3.3
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 12 · 2016→2017: 8 · 2017→2018: 7 · 2018→2019: 21 · 2019→2021: 7 · 2021→2022: 6 · 2022→2023: 9 · 2023→2024: 2 · 2024→2025: 4 → average 8.4
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 8.4 × 2.66 = 22.3. Upper limit 25.6, lower limit −19.

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.