San Joaquin County Office of Education: english

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	78,623	2288.9	− 2432	−143.1	× 13 / 261	−7.1
4	78,624	2299.0	− 2473	−174	× 9 / 261	−6
5	78,627	2359.9	− 2502	−142.1	× 14 / 261	−7.6
6	78,628	2357.8	− 2531	−173.2	× 16 / 261	−10.6
7	78,631	2397.2	− 2552	−154.8	× 29 / 261	−17.2
8	78,632	2431.0	− 2567	−136	× 42 / 261	−21.9
11	78,635	2447.0	− 2583	−136	× 138 / 261	−71.9
Sum, rounded to a whole point						−142

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	72,826	2372.3	− 2531	−158.7	× 10 / 280	−5.7
7	72,829	2416.9	− 2552	−135.1	× 16 / 280	−7.7
8	72,831	2434.9	− 2567	−132.1	× 41 / 280	−19.3
11	72,833	2438.2	− 2583	−144.8	× 213 / 280	−110.2
Sum, rounded to a whole point						−143

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
4	74,785	2314.8	− 2473	−158.2	× 12 / 313	−6.1
5	74,786	2329.2	− 2502	−172.8	× 14 / 313	−7.7
6	74,788	2378.4	− 2531	−152.6	× 18 / 313	−8.8
7	74,791	2394.1	− 2552	−157.9	× 28 / 313	−14.1
8	74,792	2395.4	− 2567	−171.6	× 34 / 313	−18.6
11	74,794	2449.0	− 2583	−134	× 207 / 313	−88.6
Sum, rounded to a whole point						−144

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
4	74,974	2316.9	− 2473	−156.1	× 15 / 428	−5.5
5	74,977	2341.3	− 2502	−160.7	× 15 / 428	−5.6
6	74,978	2372.6	− 2531	−158.4	× 14 / 428	−5.2
7	74,981	2381.1	− 2552	−170.9	× 24 / 428	−9.6
8	74,982	2405.8	− 2567	−161.2	× 70 / 428	−26.4
11	74,985	2443.2	− 2583	−139.8	× 290 / 428	−94.7
Sum, rounded to a whole point						−147

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
4	75,503	2351.8	− 2473	−121.2	× 12 / 453	−3.2
5	75,504	2402.9	− 2502	−99.1	× 15 / 453	−3.3
6	75,505	2376.5	− 2531	−154.5	× 12 / 453	−4.1
7	75,506	2365.1	− 2552	−186.9	× 19 / 453	−7.8
8	75,507	2427.7	− 2567	−139.3	× 53 / 453	−16.3
11	75,508	2467.7	− 2583	−115.3	× 342 / 453	−87
Sum, rounded to a whole point						−122

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
11	74,053	2478.2	− 2583	−104.8	× 182 / 182	−104.8
Sum, rounded to a whole point						−105

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
4	75,697	2438.3	− 2473	−34.7	× 15 / 373	−1.4
5	75,698	2372.9	− 2502	−129.1	× 16 / 373	−5.5
6	75,699	2392.8	− 2531	−138.2	× 16 / 373	−5.9
7	75,700	2407.1	− 2552	−144.9	× 18 / 373	−7
8	75,701	2398.2	− 2567	−168.8	× 43 / 373	−19.5
11	75,702	2453.0	− 2583	−130	× 265 / 373	−92.4
Sum, rounded to a whole point						−132

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	75,673	2415.3	− 2531	−115.7	× 11 / 380	−3.3
7	75,674	2358.2	− 2552	−193.8	× 26 / 380	−13.3
8	75,675	2374.5	− 2567	−192.5	× 51 / 380	−25.8
11	75,676	2438.2	− 2583	−144.8	× 292 / 380	−111.3
Sum, rounded to a whole point						−154

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	75,685	2406.6	− 2531	−124.4	× 11 / 322	−4.2
7	75,686	2379.0	− 2552	−173	× 27 / 322	−14.5
8	75,687	2388.7	− 2567	−178.3	× 38 / 322	−21
11	75,688	2442.0	− 2583	−141	× 246 / 322	−107.7
Sum, rounded to a whole point						−148

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	75,345	2366.1	− 2531	−164.9	× 19 / 332	−9.4
7	75,346	2437.6	− 2552	−114.4	× 13 / 332	−4.5
8	75,347	2403.4	− 2567	−163.6	× 27 / 332	−13.3
11	75,348	2447.7	− 2583	−135.3	× 273 / 332	−111.3
Sum, rounded to a whole point						−138

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	75,238	2328.0	− 2432	−104	× 11 / 303	−3.8
7	75,242	2417.2	− 2552	−134.8	× 33 / 303	−14.7
8	75,243	2407.1	− 2567	−159.9	× 46 / 303	−24.3
11	75,244	2423.0	− 2583	−160	× 213 / 303	−112.5
Sum, rounded to a whole point						−155

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −142, −143, −144, −147, −122, −105, −132, −154, −148, −138, −155 → −139.1
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: 1 · 2017→2018: 3 · 2018→2019: 25 · 2019→2021: 17 · 2021→2022: 27 · 2022→2023: 22 · 2023→2024: 6 · 2024→2025: 10 · 2025→2026: 17 → average 12.9
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 12.9 × 2.66 = 34.3. Upper limit −104.8, lower limit −173.4.

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.

San Joaquin County Office of Education