Audeo Charter: 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
6	73,966	2447.2	− 2552	−104.8	× 25 / 310	−8.5
7	73,969	2471.9	− 2567	−95.1	× 48 / 310	−14.7
8	73,970	2482.7	− 2586	−103.3	× 38 / 310	−12.7
11	73,973	2508.3	− 2628	−119.7	× 199 / 310	−76.8
Sum, rounded to a whole point						−113

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	68,682	2464.1	− 2552	−87.9	× 27 / 237	−10
7	68,684	2483.4	− 2567	−83.6	× 44 / 237	−15.5
8	68,687	2493.8	− 2586	−92.2	× 48 / 237	−18.7
11	68,688	2545.3	− 2628	−82.7	× 118 / 237	−41.2
Sum, rounded to a whole point						−85

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	70,499	2480.9	− 2552	−71.1	× 33 / 148	−15.9
7	70,501	2512.6	− 2567	−54.4	× 24 / 148	−8.8
8	70,503	2505.2	− 2586	−80.8	× 27 / 148	−14.7
11	70,505	2540.8	− 2628	−87.2	× 64 / 148	−37.7
Sum, rounded to a whole point						−77

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	70,646	2433.3	− 2552	−118.7	× 28 / 192	−17.3
7	70,648	2504.1	− 2567	−62.9	× 42 / 192	−13.8
8	70,650	2472.2	− 2586	−113.8	× 50 / 192	−29.6
11	70,652	2556.4	− 2628	−71.6	× 72 / 192	−26.9
Sum, rounded to a whole point						−88

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	71,135	2496.4	− 2552	−55.6	× 18 / 189	−5.3
7	71,136	2470.1	− 2567	−96.9	× 38 / 189	−19.5
8	71,137	2502.2	− 2586	−83.8	× 43 / 189	−19.1
11	71,138	2532.9	− 2628	−95.1	× 90 / 189	−45.3
Sum, rounded to a whole point						−89

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	71,232	2381.4	− 2436	−54.6	× 16 / 151	−5.8
4	71,233	2437.5	− 2485	−47.5	× 19 / 151	−6
5	71,234	2445.2	− 2528	−82.8	× 28 / 151	−15.4
6	71,235	2455.6	− 2552	−96.4	× 16 / 151	−10.2
7	71,236	2500.1	− 2567	−66.9	× 11 / 151	−4.9
8	71,237	2543.5	− 2586	−42.5	× 22 / 151	−6.2
11	71,238	2535.2	− 2628	−92.8	× 39 / 151	−24
Sum, rounded to a whole point						−72

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	71,226	2330.9	− 2436	−105.1	× 16 / 123	−13.7
6	71,229	2420.4	− 2552	−131.6	× 14 / 123	−15
7	71,230	2493.0	− 2567	−74	× 24 / 123	−14.4
8	71,231	2457.8	− 2586	−128.2	× 33 / 123	−34.4
11	71,232	2545.7	− 2628	−82.3	× 36 / 123	−24.1
Sum, rounded to a whole point						−102

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	71,210	2409.3	− 2436	−26.7	× 14 / 188	−2
4	71,211	2401.7	− 2485	−83.3	× 23 / 188	−10.2
6	71,213	2436.5	− 2552	−115.5	× 16 / 188	−9.8
7	71,214	2483.7	− 2567	−83.3	× 35 / 188	−15.5
8	71,215	2532.8	− 2586	−53.2	× 36 / 188	−10.2
11	71,216	2551.7	− 2628	−76.3	× 64 / 188	−26
Sum, rounded to a whole point						−74

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	70,924	2409.8	− 2436	−26.2	× 13 / 177	−1.9
5	70,926	2407.8	− 2528	−120.2	× 18 / 177	−12.2
6	70,927	2503.7	− 2552	−48.3	× 16 / 177	−4.4
7	70,928	2515.7	− 2567	−51.3	× 24 / 177	−7
8	70,929	2493.7	− 2586	−92.3	× 42 / 177	−21.9
11	70,930	2585.2	− 2628	−42.8	× 64 / 177	−15.5
Sum, rounded to a whole point						−63

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −113, −85, −77, −88, −89, −72, −102, −74, −63 → −84.8
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 28 · 2016→2017: 8 · 2017→2018: 11 · 2018→2019: 1 · 2019→2022: 17 · 2022→2023: 30 · 2023→2024: 28 · 2024→2025: 11 → average 16.8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 16.8 × 2.66 = 44.7. Upper limit −40.1, lower limit −129.5.

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.