San Joaquin County Office Of Education: math

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	78,622	2283.7	− 2436	−152.3	× 13 / 259	−7.6
4	78,625	2324.5	− 2485	−160.5	× 6 / 259	−3.7
5	78,626	2399.0	− 2528	−129	× 7 / 259	−3.5
6	78,629	2368.5	− 2552	−183.5	× 15 / 259	−10.6
7	78,630	2366.2	− 2567	−200.8	× 24 / 259	−18.6
8	78,633	2398.0	− 2586	−188	× 39 / 259	−28.3
11	78,634	2418.2	− 2628	−209.8	× 155 / 259	−125.6
Sum, rounded to a whole point						−198

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	72,827	2368.6	− 2552	−183.4	× 9 / 265	−6.2
7	72,828	2372.5	− 2567	−194.5	× 14 / 265	−10.3
8	72,830	2399.5	− 2586	−186.5	× 39 / 265	−27.4
11	72,832	2411.3	− 2628	−216.7	× 203 / 265	−166
Sum, rounded to a whole point						−210

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	74,787	2321.7	− 2528	−206.3	× 14 / 313	−9.2
6	74,789	2344.9	− 2552	−207.1	× 16 / 313	−10.6
7	74,790	2386.5	− 2567	−180.5	× 28 / 313	−16.1
8	74,793	2370.5	− 2586	−215.5	× 39 / 313	−26.9
11	74,795	2419.1	− 2628	−208.9	× 216 / 313	−144.2
Sum, rounded to a whole point						−207

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
4	74,975	2356.5	− 2485	−128.5	× 17 / 408	−5.4
5	74,976	2325.3	− 2528	−202.7	× 13 / 408	−6.5
6	74,979	2314.0	− 2552	−238	× 12 / 408	−7
7	74,980	2327.1	− 2567	−239.9	× 22 / 408	−12.9
8	74,983	2370.9	− 2586	−215.1	× 72 / 408	−38
11	74,984	2407.6	− 2628	−220.4	× 272 / 408	−146.9
Sum, rounded to a whole point						−217

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
4	75,511	2341.5	− 2485	−143.5	× 12 / 441	−3.9
5	75,512	2387.6	− 2528	−140.4	× 16 / 441	−5.1
6	75,513	2342.8	− 2552	−209.2	× 13 / 441	−6.2
7	75,514	2366.1	− 2567	−200.9	× 20 / 441	−9.1
8	75,515	2383.6	− 2586	−202.4	× 55 / 441	−25.2
11	75,516	2423.0	− 2628	−205	× 325 / 441	−151.1
Sum, rounded to a whole point						−201

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
11	74,061	2429.9	− 2628	−198.1	× 169 / 169	−198.1
Sum, rounded to a whole point						−198

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
4	75,705	2426.0	− 2485	−59	× 15 / 361	−2.5
5	75,706	2381.4	− 2528	−146.6	× 16 / 361	−6.5
6	75,707	2371.3	− 2552	−180.7	× 16 / 361	−8
7	75,708	2385.5	− 2567	−181.5	× 20 / 361	−10.1
8	75,709	2378.6	− 2586	−207.4	× 40 / 361	−23
11	75,710	2410.6	− 2628	−217.4	× 254 / 361	−153
Sum, rounded to a whole point						−203

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	75,682	2379.4	− 2567	−187.6	× 25 / 339	−13.8
8	75,683	2366.0	− 2586	−220	× 52 / 339	−33.7
11	75,684	2409.5	− 2628	−218.5	× 262 / 339	−168.9
Sum, rounded to a whole point						−216

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	75,693	2351.9	− 2552	−200.1	× 11 / 293	−7.5
7	75,694	2351.0	− 2567	−216	× 23 / 293	−17
8	75,695	2365.2	− 2586	−220.8	× 32 / 293	−24.1
11	75,696	2401.4	− 2628	−226.6	× 227 / 293	−175.6
Sum, rounded to a whole point						−224

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	75,353	2336.9	− 2552	−215.1	× 19 / 347	−11.8
7	75,354	2375.5	− 2567	−191.5	× 22 / 347	−12.1
8	75,355	2355.5	− 2586	−230.5	× 36 / 347	−23.9
11	75,356	2407.7	− 2628	−220.3	× 270 / 347	−171.4
Sum, rounded to a whole point						−219

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −198, −210, −207, −217, −201, −198, −203, −216, −224, −219 → −209.3
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: 3 · 2017→2018: 10 · 2018→2019: 16 · 2019→2021: 3 · 2021→2022: 5 · 2022→2023: 13 · 2023→2024: 8 · 2024→2025: 5 → average 8.3
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 8.3 × 2.66 = 22.1. Upper limit −187.2, lower limit −231.4.

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.

Schools in San Joaquin County Office Of Education

John F. Cruikshank, Jr.
One.Charter Charter
River Islands Technology Academy Ii Charter
San Joaquin County Community
TEAM Charter Charter
Venture Academy Charter