Antioch Charter 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.

Measured against the grade bars

The state's math test uses one scale for every grade, so a score means the same thing in grade 3 as in grade 8.

3rd The average 3rd grader scores 38 points under the grade 3 bar. 2398 vs. 2436.
4th The average 4th grader scores 24 points under the grade 3 bar. 2412 vs. 2436. The 4th-grade bar is 2485.
5th The average 5th grader scores 37 points under the grade 5 bar. 2491 vs. 2528.
6th The average 6th grader scores just under the grade 5 bar. 2525 vs. 2528. The 6th-grade bar is 2552.
7th The average 7th grader scores 22 points under the grade 6 bar. 2530 vs. 2552. The 7th-grade bar is 2567.
8th The average 8th grader scores 33 points under the grade 5 bar. 2495 vs. 2528. The 8th-grade bar is 2586.

2026 results. "Meets standard" is the state's mark for being on track for that grade.

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	6,108	2352.8	− 2436	−83.2	× 16 / 120	−11.1
4	6,111	2449.0	− 2485	−36	× 22 / 120	−6.6
5	6,112	2494.0	− 2528	−34	× 22 / 120	−6.2
6	6,115	2475.8	− 2552	−76.2	× 19 / 120	−12.1
7	6,116	2517.2	− 2567	−49.8	× 21 / 120	−8.7
8	6,119	2586.7	− 2586	0.7	× 20 / 120	0.1
Sum, rounded to a whole point						−45

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	5,550	2399.5	− 2436	−36.5	× 20 / 122	−6
4	5,552	2409.1	− 2485	−75.9	× 21 / 122	−13.1
5	5,555	2493.4	− 2528	−34.6	× 19 / 122	−5.4
6	5,556	2523.2	− 2552	−28.8	× 23 / 122	−5.4
7	5,559	2508.6	− 2567	−58.4	× 18 / 122	−8.6
8	5,561	2559.2	− 2586	−26.8	× 21 / 122	−4.6
Sum, rounded to a whole point						−43

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	5,687	2406.4	− 2436	−29.6	× 21 / 123	−5.1
4	5,688	2447.8	− 2485	−37.2	× 19 / 123	−5.7
5	5,691	2460.5	− 2528	−67.5	× 24 / 123	−13.2
6	5,692	2550.8	− 2552	−1.2	× 18 / 123	−0.2
7	5,694	2590.1	− 2567	23.1	× 22 / 123	4.1
8	5,696	2534.5	− 2586	−51.5	× 19 / 123	−8
Sum, rounded to a whole point						−28

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	5,680	2402.0	− 2436	−34	× 20 / 123	−5.5
4	5,682	2461.7	− 2485	−23.3	× 21 / 123	−4
5	5,684	2494.9	− 2528	−33.1	× 19 / 123	−5.1
6	5,686	2498.9	− 2552	−53.1	× 24 / 123	−10.4
7	5,688	2584.2	− 2567	17.2	× 17 / 123	2.4
8	5,690	2582.6	− 2586	−3.4	× 22 / 123	−0.6
Sum, rounded to a whole point						−23

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	5,747	2430.3	− 2436	−5.7	× 23 / 124	−1.1
4	5,748	2424.7	− 2485	−60.3	× 19 / 124	−9.2
5	5,749	2513.0	− 2528	−15	× 22 / 124	−2.7
6	5,750	2521.4	− 2552	−30.6	× 22 / 124	−5.4
7	5,751	2532.0	− 2567	−35	× 20 / 124	−5.6
8	5,752	2581.9	− 2586	−4.1	× 18 / 124	−0.6
Sum, rounded to a whole point						−25

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	5,598	2406.3	− 2436	−29.7	× 23 / 129	−5.3
4	5,599	2423.3	− 2485	−61.7	× 22 / 129	−10.5
5	5,600	2486.4	− 2528	−41.6	× 19 / 129	−6.1
6	5,601	2530.8	− 2552	−21.2	× 24 / 129	−3.9
7	5,602	2526.4	− 2567	−40.6	× 20 / 129	−6.3
8	5,603	2565.8	− 2586	−20.2	× 21 / 129	−3.3
Sum, rounded to a whole point						−35

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	5,596	2406.9	− 2436	−29.1	× 21 / 130	−4.7
4	5,597	2435.8	− 2485	−49.2	× 21 / 130	−7.9
5	5,598	2471.5	− 2528	−56.5	× 24 / 130	−10.4
6	5,599	2503.1	− 2552	−48.9	× 21 / 130	−7.9
7	5,600	2556.3	− 2567	−10.7	× 24 / 130	−2
8	5,601	2556.6	− 2586	−29.4	× 19 / 130	−4.3
Sum, rounded to a whole point						−37

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	5,537	2420.5	− 2436	−15.5	× 21 / 130	−2.5
4	5,538	2443.3	− 2485	−41.7	× 23 / 130	−7.4
5	5,539	2482.4	− 2528	−45.6	× 21 / 130	−7.4
6	5,540	2466.8	− 2552	−85.2	× 22 / 130	−14.4
7	5,541	2549.2	− 2567	−17.8	× 19 / 130	−2.6
8	5,542	2544.2	− 2586	−41.8	× 24 / 130	−7.7
Sum, rounded to a whole point						−42

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	5,499	2398.5	− 2436	−37.5	× 22 / 130	−6.3
4	5,500	2440.4	− 2485	−44.6	× 20 / 130	−6.9
5	5,501	2461.3	− 2528	−66.7	× 23 / 130	−11.8
6	5,502	2488.6	− 2552	−63.4	× 23 / 130	−11.2
7	5,503	2481.4	− 2567	−85.6	× 24 / 130	−15.8
8	5,504	2524.3	− 2586	−61.7	× 18 / 130	−8.5
Sum, rounded to a whole point						−61

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	5,503	2397.7	− 2436	−38.3	× 21 / 129	−6.2
4	5,504	2411.8	− 2485	−73.2	× 22 / 129	−12.5
5	5,505	2491.4	− 2528	−36.6	× 19 / 129	−5.4
6	5,506	2524.8	− 2552	−27.2	× 22 / 129	−4.6
7	5,507	2529.6	− 2567	−37.4	× 23 / 129	−6.7
8	5,508	2494.7	− 2586	−91.3	× 22 / 129	−15.6
Sum, rounded to a whole point						−51

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −45, −43, −28, −23, −25, −35, −37, −42, −61, −51 → −39
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 2 · 2016→2017: 15 · 2017→2018: 5 · 2018→2019: 2 · 2019→2022: 10 · 2022→2023: 2 · 2023→2024: 5 · 2024→2025: 19 · 2025→2026: 10 → average 7.8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 7.8 × 2.66 = 20.7. Upper limit −18.3, lower limit −59.7.

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.