California Virtual Academy @ San Joaquin: math

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	80,147	2377.7	− 2436	−58.3	× 81 / 781	−6
4	80,149	2434.5	− 2485	−50.5	× 69 / 781	−4.5
5	80,151	2437.6	− 2528	−90.4	× 76 / 781	−8.8
6	80,153	2465.4	− 2552	−86.6	× 99 / 781	−11
7	80,155	2482.4	− 2567	−84.6	× 127 / 781	−13.8
8	80,157	2515.0	− 2586	−71	× 172 / 781	−15.6
11	80,159	2520.9	− 2628	−107.1	× 157 / 781	−21.5
Sum, rounded to a whole point						−81

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	74,259	2377.4	− 2436	−58.6	× 66 / 733	−5.3
4	74,261	2431.9	− 2485	−53.1	× 76 / 733	−5.5
5	74,263	2464.2	− 2528	−63.8	× 78 / 733	−6.8
6	74,264	2446.6	− 2552	−105.4	× 93 / 733	−13.4
7	74,267	2487.4	− 2567	−79.6	× 133 / 733	−14.4
8	74,268	2483.4	− 2586	−102.6	× 145 / 733	−20.3
11	74,271	2512.2	− 2628	−115.8	× 142 / 733	−22.4
Sum, rounded to a whole point						−88

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	76,237	2387.7	− 2436	−48.3	× 62 / 670	−4.5
4	76,239	2424.7	− 2485	−60.3	× 70 / 670	−6.3
5	76,241	2433.4	− 2528	−94.6	× 66 / 670	−9.3
6	76,244	2486.1	− 2552	−65.9	× 86 / 670	−8.5
7	76,246	2481.7	− 2567	−85.3	× 109 / 670	−13.9
8	76,247	2477.1	− 2586	−108.9	× 142 / 670	−23.1
11	76,250	2512.0	− 2628	−116	× 135 / 670	−23.4
Sum, rounded to a whole point						−89

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	76,428	2385.6	− 2436	−50.4	× 56 / 712	−4
4	76,430	2413.8	− 2485	−71.2	× 80 / 712	−8
5	76,432	2433.2	− 2528	−94.8	× 72 / 712	−9.6
6	76,434	2443.9	− 2552	−108.1	× 88 / 712	−13.4
7	76,436	2488.4	− 2567	−78.6	× 137 / 712	−15.1
8	76,438	2471.7	− 2586	−114.3	× 132 / 712	−21.2
11	76,440	2508.7	− 2628	−119.3	× 147 / 712	−24.6
Sum, rounded to a whole point						−96

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	76,954	2375.5	− 2436	−60.5	× 61 / 763	−4.8
4	76,955	2409.7	− 2485	−75.3	× 61 / 763	−6
5	76,956	2440.4	− 2528	−87.6	× 77 / 763	−8.8
6	76,957	2459.4	− 2552	−92.6	× 116 / 763	−14.1
7	76,958	2473.0	− 2567	−94	× 136 / 763	−16.8
8	76,959	2490.3	− 2586	−95.7	× 190 / 763	−23.8
11	76,960	2517.1	− 2628	−110.9	× 122 / 763	−17.7
Sum, rounded to a whole point						−92

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	75,495	2428.6	− 2436	−7.4	× 144 / 1228	−0.9
4	75,496	2455.3	− 2485	−29.7	× 139 / 1228	−3.4
5	75,497	2468.0	− 2528	−60	× 149 / 1228	−7.3
6	75,498	2487.6	− 2552	−64.4	× 167 / 1228	−8.8
7	75,499	2520.6	− 2567	−46.4	× 209 / 1228	−7.9
8	75,500	2495.8	− 2586	−90.2	× 239 / 1228	−17.6
11	75,501	2552.9	− 2628	−75.1	× 181 / 1228	−11.1
Sum, rounded to a whole point						−57

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	77,100	2422.4	− 2436	−13.6	× 162 / 1285	−1.7
4	77,101	2437.3	− 2485	−47.7	× 175 / 1285	−6.5
5	77,102	2462.5	− 2528	−65.5	× 174 / 1285	−8.9
6	77,103	2479.4	− 2552	−72.6	× 171 / 1285	−9.7
7	77,104	2513.3	− 2567	−53.7	× 180 / 1285	−7.5
8	77,105	2515.8	− 2586	−70.2	× 227 / 1285	−12.4
11	77,106	2537.5	− 2628	−90.5	× 196 / 1285	−13.8
Sum, rounded to a whole point						−60

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	77,094	2418.1	− 2436	−17.9	× 158 / 1442	−2
4	77,095	2434.8	− 2485	−50.2	× 179 / 1442	−6.2
5	77,096	2437.6	− 2528	−90.4	× 189 / 1442	−11.8
6	77,097	2453.2	− 2552	−98.8	× 216 / 1442	−14.8
7	77,098	2509.7	− 2567	−57.3	× 221 / 1442	−8.8
8	77,099	2496.2	− 2586	−89.8	× 249 / 1442	−15.5
11	77,100	2546.8	− 2628	−81.2	× 230 / 1442	−13
Sum, rounded to a whole point						−72

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	77,094	2396.5	− 2436	−39.5	× 190 / 1635	−4.6
4	77,095	2438.1	− 2485	−46.9	× 199 / 1635	−5.7
5	77,096	2444.8	− 2528	−83.2	× 197 / 1635	−10
6	77,097	2462.6	− 2552	−89.4	× 257 / 1635	−14.1
7	77,098	2510.9	− 2567	−56.1	× 273 / 1635	−9.4
8	77,099	2511.3	− 2586	−74.7	× 277 / 1635	−12.7
11	77,100	2544.8	− 2628	−83.2	× 242 / 1635	−12.3
Sum, rounded to a whole point						−69

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	76,746	2404.7	− 2436	−31.3	× 202 / 1807	−3.5
4	76,747	2432.6	− 2485	−52.4	× 204 / 1807	−5.9
5	76,748	2454.3	− 2528	−73.7	× 214 / 1807	−8.7
6	76,749	2498.2	− 2552	−53.8	× 267 / 1807	−7.9
7	76,750	2534.5	− 2567	−32.5	× 338 / 1807	−6.1
8	76,751	2548.9	− 2586	−37.1	× 322 / 1807	−6.6
11	76,752	2602.5	− 2628	−25.5	× 260 / 1807	−3.7
Sum, rounded to a whole point						−42

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −81, −88, −89, −96, −92, −57, −60, −72, −69, −42 → −74.6
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 7 · 2016→2017: 1 · 2017→2018: 7 · 2018→2019: 4 · 2019→2021: 35 · 2021→2022: 3 · 2022→2023: 12 · 2023→2024: 3 · 2024→2025: 27 → average 11
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 11 × 2.66 = 29.3. Upper limit −45.3, lower limit −103.9.

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.