Madison Elementary: 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	36,762	2383.4	− 2436	−52.6	× 93 / 339	−14.4
4	36,763	2415.8	− 2485	−69.2	× 89 / 339	−18.2
5	36,765	2400.9	− 2528	−127.1	× 68 / 339	−25.5
6	36,768	2463.6	− 2552	−88.4	× 89 / 339	−23.2
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	34,246	2391.4	− 2436	−44.6	× 88 / 320	−12.3
4	34,249	2434.5	− 2485	−50.5	× 88 / 320	−13.9
5	34,251	2434.4	− 2528	−93.6	× 84 / 320	−24.6
6	34,253	2439.1	− 2552	−112.9	× 60 / 320	−21.2
Sum, rounded to a whole point						−72

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,859	2405.0	− 2436	−31	× 75 / 306	−7.6
4	34,861	2437.4	− 2485	−47.6	× 77 / 306	−12
5	34,862	2439.5	− 2528	−88.5	× 80 / 306	−23.1
6	34,865	2461.0	− 2552	−91	× 74 / 306	−22
Sum, rounded to a whole point						−65

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,869	2412.0	− 2436	−24	× 71 / 291	−5.9
4	34,871	2454.3	− 2485	−30.7	× 74 / 291	−7.8
5	34,873	2435.5	− 2528	−92.5	× 71 / 291	−22.6
6	34,875	2463.2	− 2552	−88.8	× 75 / 291	−22.9
Sum, rounded to a whole point						−59

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	35,044	2391.3	− 2436	−44.7	× 85 / 289	−13.1
4	35,045	2454.1	− 2485	−30.9	× 64 / 289	−6.8
5	35,046	2495.7	− 2528	−32.3	× 67 / 289	−7.5
6	35,047	2439.9	− 2552	−112.1	× 73 / 289	−28.3
Sum, rounded to a whole point						−56

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,941	2405.2	− 2436	−30.8	× 55 / 225	−7.5
4	34,942	2448.0	− 2485	−37	× 48 / 225	−7.9
5	34,943	2405.6	− 2528	−122.4	× 58 / 225	−31.6
6	34,944	2442.3	− 2552	−109.7	× 64 / 225	−31.2
Sum, rounded to a whole point						−78

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,990	2409.5	− 2436	−26.5	× 55 / 216	−6.7
4	34,991	2436.0	− 2485	−49	× 57 / 216	−12.9
5	34,992	2449.4	− 2528	−78.6	× 45 / 216	−16.4
6	34,993	2457.2	− 2552	−94.8	× 59 / 216	−25.9
Sum, rounded to a whole point						−62

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,848	2394.8	− 2436	−41.2	× 61 / 223	−11.3
4	34,849	2450.8	− 2485	−34.2	× 58 / 223	−8.9
5	34,850	2414.5	− 2528	−113.5	× 59 / 223	−30
6	34,851	2504.7	− 2552	−47.3	× 45 / 223	−9.5
Sum, rounded to a whole point						−60

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,695	2363.1	− 2436	−72.9	× 48 / 214	−16.4
4	34,696	2438.7	− 2485	−46.3	× 59 / 214	−12.8
5	34,697	2442.3	− 2528	−85.7	× 52 / 214	−20.8
6	34,698	2461.4	− 2552	−90.6	× 55 / 214	−23.3
Sum, rounded to a whole point						−73

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −81, −72, −65, −59, −56, −78, −62, −60, −73 → −67.3
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 9 · 2016→2017: 7 · 2017→2018: 6 · 2018→2019: 3 · 2019→2022: 22 · 2022→2023: 16 · 2023→2024: 2 · 2024→2025: 13 → average 9.8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 9.8 × 2.66 = 26.1. Upper limit −41.2, lower limit −93.4.

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. From 2014–15, 2015–16, 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.