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The shaded band is this district'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	96,869	2412.8	− 2432	−19.2	× 115 / 627	−3.5
4	96,870	2438.1	− 2473	−34.9	× 104 / 627	−5.8
5	96,873	2491.9	− 2502	−10.1	× 106 / 627	−1.7
6	96,874	2497.9	− 2531	−33.1	× 112 / 627	−5.9
7	96,877	2509.4	− 2552	−42.6	× 86 / 627	−5.8
8	96,878	2551.6	− 2567	−15.4	× 87 / 627	−2.1
11	96,881	2612.2	− 2583	29.2	× 17 / 627	0.8
Sum, rounded to a whole point						−24

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	89,825	2409.5	− 2432	−22.5	× 102 / 642	−3.6
4	89,827	2447.5	− 2473	−25.5	× 109 / 642	−4.3
5	89,828	2479.6	− 2502	−22.4	× 113 / 642	−3.9
6	89,830	2519.2	− 2531	−11.8	× 106 / 642	−1.9
7	89,832	2525.1	− 2552	−26.9	× 108 / 642	−4.5
8	89,834	2537.9	− 2567	−29.1	× 89 / 642	−4
11	89,837	2566.5	− 2583	−16.5	× 15 / 642	−0.4
Sum, rounded to a whole point						−23

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	92,449	2408.5	− 2432	−23.5	× 100 / 652	−3.6
4	92,450	2446.0	− 2473	−27	× 102 / 652	−4.2
5	92,453	2485.3	− 2502	−16.7	× 106 / 652	−2.7
6	92,455	2519.5	− 2531	−11.5	× 113 / 652	−2
7	92,457	2533.2	− 2552	−18.8	× 100 / 652	−2.9
8	92,458	2545.3	− 2567	−21.7	× 110 / 652	−3.7
11	92,461	2579.6	− 2583	−3.4	× 21 / 652	−0.1
Sum, rounded to a whole point						−19

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	92,648	2403.8	− 2432	−28.2	× 116 / 671	−4.9
4	92,650	2444.3	− 2473	−28.7	× 102 / 671	−4.4
5	92,652	2492.7	− 2502	−9.3	× 110 / 671	−1.5
6	92,654	2526.0	− 2531	−5	× 104 / 671	−0.8
7	92,656	2548.7	− 2552	−3.3	× 114 / 671	−0.6
8	92,658	2555.9	− 2567	−11.1	× 100 / 671	−1.7
11	92,660	2646.4	− 2583	63.4	× 25 / 671	2.4
Sum, rounded to a whole point						−11

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,278	2427.1	− 2432	−4.9	× 104 / 650	−0.8
4	93,279	2466.0	− 2473	−7	× 113 / 650	−1.2
5	93,280	2480.5	− 2502	−21.5	× 99 / 650	−3.3
6	93,281	2532.3	− 2531	1.3	× 103 / 650	0.2
7	93,282	2561.8	− 2552	9.8	× 99 / 650	1.5
8	93,283	2573.9	− 2567	6.9	× 110 / 650	1.2
11	93,284	2549.5	− 2583	−33.5	× 22 / 650	−1.1
Sum, rounded to a whole point						−4

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	91,293	2375.4	− 2432	−56.6	× 112 / 630	−10.1
4	91,294	2438.0	− 2473	−35	× 113 / 630	−6.3
5	91,295	2465.3	− 2502	−36.7	× 97 / 630	−5.7
6	91,296	2494.2	− 2531	−36.8	× 108 / 630	−6.3
7	91,297	2520.3	− 2552	−31.7	× 98 / 630	−4.9
8	91,298	2547.0	− 2567	−20	× 88 / 630	−2.8
11	91,299	2608.6	− 2583	25.6	× 14 / 630	0.6
Sum, rounded to a whole point						−35

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,509	2398.3	− 2432	−33.7	× 99 / 629	−5.3
4	93,510	2458.7	− 2473	−14.3	× 112 / 629	−2.5
5	93,511	2491.1	− 2502	−10.9	× 116 / 629	−2
6	93,512	2503.7	− 2531	−27.3	× 90 / 629	−3.9
7	93,513	2561.3	− 2552	9.3	× 91 / 629	1.3
8	93,514	2558.6	− 2567	−8.4	× 100 / 629	−1.3
11	93,515	2620.0	− 2583	37	× 21 / 629	1.2
Sum, rounded to a whole point						−13

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,409	2410.0	− 2432	−22	× 103 / 634	−3.6
4	93,410	2441.1	− 2473	−31.9	× 101 / 634	−5.1
5	93,411	2474.9	− 2502	−27.1	× 111 / 634	−4.7
6	93,412	2514.0	− 2531	−17	× 117 / 634	−3.1
7	93,413	2504.5	− 2552	−47.5	× 85 / 634	−6.4
8	93,414	2573.9	− 2567	6.9	× 94 / 634	1
11	93,415	2599.4	− 2583	16.4	× 23 / 634	0.6
Sum, rounded to a whole point						−21

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,292	2397.9	− 2432	−34.1	× 105 / 661	−5.4
4	93,293	2445.8	− 2473	−27.2	× 106 / 661	−4.4
5	93,294	2474.1	− 2502	−27.9	× 101 / 661	−4.3
6	93,295	2498.3	− 2531	−32.7	× 110 / 661	−5.4
7	93,296	2547.0	− 2552	−5	× 118 / 661	−0.9
8	93,297	2530.0	− 2567	−37	× 95 / 661	−5.3
11	93,298	2597.5	− 2583	14.5	× 26 / 661	0.6
Sum, rounded to a whole point						−25

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,022	2398.9	− 2432	−33.1	× 111 / 667	−5.5
4	93,023	2441.9	− 2473	−31.1	× 107 / 667	−5
5	93,024	2474.2	− 2502	−27.8	× 113 / 667	−4.7
6	93,025	2499.5	− 2531	−31.5	× 101 / 667	−4.8
7	93,026	2508.2	− 2552	−43.8	× 108 / 667	−7.1
8	93,027	2568.7	− 2567	1.7	× 112 / 667	0.3
11	93,028	2560.3	− 2583	−22.7	× 15 / 667	−0.5
Sum, rounded to a whole point						−27

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	92,622	2391.1	− 2432	−40.9	× 95 / 652	−6
4	92,623	2461.5	− 2473	−11.5	× 101 / 652	−1.8
5	92,624	2484.6	− 2502	−17.4	× 112 / 652	−3
6	92,625	2492.2	− 2531	−38.8	× 113 / 652	−6.7
7	92,626	2519.3	− 2552	−32.7	× 102 / 652	−5.1
8	92,627	2535.2	− 2567	−31.8	× 108 / 652	−5.3
11	92,628	2639.4	− 2583	56.4	× 21 / 652	1.8
Sum, rounded to a whole point						−26

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −24, −23, −19, −11, −4, −35, −13, −21, −25, −27, −26 → −20.7
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 1 · 2016→2017: 4 · 2017→2018: 8 · 2018→2019: 7 · 2019→2021: 31 · 2021→2022: 22 · 2022→2023: 8 · 2023→2024: 4 · 2024→2025: 2 · 2025→2026: 1 → average 8.8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 8.8 × 2.66 = 23.4. Upper limit 2.7, lower limit −44.1.

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 — for a district, the total across its schools. From 2014–15, 2015–16, 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.

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