Antelope Valley Learning Academy: 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	35,526	2356.4	− 2436	−79.6	× 20 / 314	−5.1
4	35,528	2407.4	− 2485	−77.6	× 13 / 314	−3.2
5	35,530	2409.5	− 2528	−118.5	× 24 / 314	−9.1
6	35,532	2453.4	− 2552	−98.6	× 24 / 314	−7.5
7	35,534	2462.5	− 2567	−104.5	× 20 / 314	−6.7
8	35,536	2456.0	− 2586	−130	× 38 / 314	−15.7
11	35,538	2449.3	− 2628	−178.7	× 175 / 314	−99.6
Sum, rounded to a whole point						−147

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	33,166	2390.0	− 2436	−46	× 11 / 276	−1.8
4	33,167	2356.9	− 2485	−128.1	× 14 / 276	−6.5
5	33,170	2432.3	− 2528	−95.7	× 17 / 276	−5.9
6	33,171	2432.0	− 2552	−120	× 23 / 276	−10
7	33,173	2437.6	− 2567	−129.4	× 28 / 276	−13.1
8	33,175	2453.2	− 2586	−132.8	× 25 / 276	−12
11	33,177	2465.1	− 2628	−162.9	× 158 / 276	−93.3
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	33,744	2379.9	− 2485	−105.1	× 14 / 332	−4.4
5	33,746	2414.9	− 2528	−113.1	× 18 / 332	−6.1
6	33,747	2444.6	− 2552	−107.4	× 26 / 332	−8.4
7	33,749	2421.0	− 2567	−146	× 21 / 332	−9.2
8	33,752	2442.2	− 2586	−143.8	× 38 / 332	−16.5
11	33,754	2468.7	− 2628	−159.3	× 215 / 332	−103.2
Sum, rounded to a whole point						−148

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	33,768	2352.6	− 2436	−83.4	× 30 / 622	−4
4	33,769	2388.7	− 2485	−96.3	× 26 / 622	−4
5	33,772	2414.9	− 2528	−113.1	× 31 / 622	−5.6
6	33,773	2413.0	− 2552	−139	× 48 / 622	−10.7
7	33,776	2438.8	− 2567	−128.2	× 76 / 622	−15.7
8	33,778	2431.8	− 2586	−154.2	× 90 / 622	−22.3
11	33,780	2452.9	− 2628	−175.1	× 321 / 622	−90.4
Sum, rounded to a whole point						−153

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	33,947	2342.9	− 2436	−93.1	× 17 / 666	−2.4
4	33,948	2394.1	− 2485	−90.9	× 22 / 666	−3
5	33,949	2403.2	− 2528	−124.8	× 26 / 666	−4.9
6	33,950	2434.0	− 2552	−118	× 44 / 666	−7.8
7	33,951	2452.8	− 2567	−114.2	× 67 / 666	−11.5
8	33,952	2451.5	− 2586	−134.5	× 91 / 666	−18.4
11	33,953	2463.9	− 2628	−164.1	× 399 / 666	−98.3
Sum, rounded to a whole point						−146

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	33,150	2301.8	− 2436	−134.2	× 19 / 450	−5.7
4	33,151	2415.5	− 2485	−69.5	× 32 / 450	−4.9
5	33,152	2384.4	− 2528	−143.6	× 23 / 450	−7.3
6	33,153	2426.3	− 2552	−125.7	× 32 / 450	−8.9
7	33,154	2414.2	− 2567	−152.8	× 36 / 450	−12.2
8	33,155	2462.8	− 2586	−123.2	× 53 / 450	−14.5
11	33,156	2469.3	− 2628	−158.7	× 255 / 450	−89.9
Sum, rounded to a whole point						−144

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	33,858	2303.3	− 2436	−132.7	× 14 / 301	−6.2
5	33,860	2413.9	− 2528	−114.1	× 17 / 301	−6.4
6	33,861	2382.5	− 2552	−169.5	× 14 / 301	−7.9
7	33,862	2423.6	− 2567	−143.4	× 27 / 301	−12.9
8	33,863	2394.3	− 2586	−191.7	× 27 / 301	−17.2
11	33,864	2478.3	− 2628	−149.7	× 202 / 301	−100.5
Sum, rounded to a whole point						−151

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	33,907	2323.0	− 2436	−113	× 12 / 294	−4.6
5	33,909	2376.8	− 2528	−151.2	× 13 / 294	−6.7
6	33,910	2391.0	− 2552	−161	× 23 / 294	−12.6
7	33,911	2410.7	− 2567	−156.3	× 29 / 294	−15.4
8	33,912	2419.5	− 2586	−166.5	× 53 / 294	−30
11	33,913	2469.6	− 2628	−158.4	× 164 / 294	−88.4
Sum, rounded to a whole point						−158

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	33,765	2292.1	− 2436	−143.9	× 14 / 269	−7.5
5	33,767	2357.5	− 2528	−170.5	× 15 / 269	−9.5
6	33,768	2371.7	− 2552	−180.3	× 22 / 269	−14.7
7	33,769	2406.0	− 2567	−161	× 34 / 269	−20.3
8	33,770	2407.8	− 2586	−178.2	× 45 / 269	−29.8
11	33,771	2465.1	− 2628	−162.9	× 139 / 269	−84.2
Sum, rounded to a whole point						−166

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	33,628	2387.8	− 2528	−140.2	× 12 / 223	−7.5
6	33,629	2362.8	− 2552	−189.2	× 13 / 223	−11
7	33,630	2438.1	− 2567	−128.9	× 29 / 223	−16.8
8	33,631	2407.6	− 2586	−178.4	× 37 / 223	−29.6
11	33,632	2458.6	− 2628	−169.4	× 132 / 223	−100.3
Sum, rounded to a whole point						−165

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −147, −143, −148, −153, −146, −144, −151, −158, −166, −165 → −152.1
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 4 · 2016→2017: 5 · 2017→2018: 5 · 2018→2019: 7 · 2019→2021: 2 · 2021→2022: 7 · 2022→2023: 7 · 2023→2024: 8 · 2024→2025: 1 → average 5.1
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 5.1 × 2.66 = 13.6. Upper limit −138.5, lower limit −165.7.

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.