Margaret White 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	57,784	2415.6	− 2436	−20.4	× 66 / 381	−3.5
4	57,787	2435.1	− 2485	−49.9	× 78 / 381	−10.2
5	57,788	2414.0	− 2528	−114	× 85 / 381	−25.4
6	57,791	2447.1	− 2552	−104.9	× 70 / 381	−19.3
7	57,792	2403.8	− 2567	−163.2	× 82 / 381	−35.1
Sum, rounded to a whole point						−94

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	53,639	2376.4	− 2436	−59.6	× 76 / 443	−10.2
4	53,642	2437.7	− 2485	−47.3	× 68 / 443	−7.3
5	53,644	2436.8	− 2528	−91.2	× 72 / 443	−14.8
6	53,646	2420.9	− 2552	−131.1	× 81 / 443	−24
7	53,648	2452.5	− 2567	−114.5	× 70 / 443	−18.1
8	53,649	2442.1	− 2586	−143.9	× 76 / 443	−24.7
Sum, rounded to a whole point						−99

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	55,196	2394.2	− 2436	−41.8	× 78 / 461	−7.1
4	55,199	2414.3	− 2485	−70.7	× 72 / 461	−11
5	55,200	2420.4	− 2528	−107.6	× 71 / 461	−16.6
6	55,202	2453.0	− 2552	−99	× 81 / 461	−17.4
7	55,205	2423.9	− 2567	−143.1	× 85 / 461	−26.4
8	55,206	2455.8	− 2586	−130.2	× 74 / 461	−20.9
Sum, rounded to a whole point						−99

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	55,292	2413.4	− 2436	−22.6	× 69 / 445	−3.5
4	55,294	2433.2	− 2485	−51.8	× 80 / 445	−9.3
5	55,296	2414.2	− 2528	−113.8	× 69 / 445	−17.6
6	55,298	2466.6	− 2552	−85.4	× 71 / 445	−13.6
7	55,300	2447.8	− 2567	−119.2	× 72 / 445	−19.3
8	55,302	2406.0	− 2586	−180	× 84 / 445	−34
Sum, rounded to a whole point						−97

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	55,553	2394.6	− 2436	−41.4	× 69 / 419	−6.8
4	55,554	2442.2	− 2485	−42.8	× 70 / 419	−7.2
5	55,555	2431.3	− 2528	−96.7	× 78 / 419	−18
6	55,556	2419.6	− 2552	−132.4	× 71 / 419	−22.4
7	55,557	2457.1	− 2567	−109.9	× 64 / 419	−16.8
8	55,558	2477.5	− 2586	−108.5	× 67 / 419	−17.3
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	55,607	2371.9	− 2436	−64.1	× 69 / 422	−10.5
4	55,608	2416.7	− 2485	−68.3	× 62 / 422	−10
5	55,609	2419.3	− 2528	−108.7	× 75 / 422	−19.3
6	55,610	2439.9	− 2552	−112.1	× 68 / 422	−18.1
7	55,611	2470.9	− 2567	−96.1	× 65 / 422	−14.8
8	55,612	2415.5	− 2586	−170.5	× 83 / 422	−33.5
Sum, rounded to a whole point						−106

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	55,556	2357.6	− 2436	−78.4	× 65 / 395	−12.9
4	55,557	2384.4	− 2485	−100.6	× 70 / 395	−17.8
5	55,558	2435.3	− 2528	−92.7	× 53 / 395	−12.4
6	55,559	2427.4	− 2552	−124.6	× 68 / 395	−21.5
7	55,560	2427.7	− 2567	−139.3	× 72 / 395	−25.4
8	55,561	2469.7	− 2586	−116.3	× 67 / 395	−19.7
Sum, rounded to a whole point						−110

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	55,432	2355.8	− 2436	−80.2	× 50 / 356	−11.3
4	55,433	2393.0	− 2485	−92	× 60 / 356	−15.5
5	55,434	2417.4	− 2528	−110.6	× 64 / 356	−19.9
6	55,435	2412.4	− 2552	−139.6	× 53 / 356	−20.8
7	55,436	2433.8	− 2567	−133.2	× 61 / 356	−22.8
8	55,437	2424.0	− 2586	−162	× 68 / 356	−30.9
Sum, rounded to a whole point						−121

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	55,184	2384.5	− 2436	−51.5	× 60 / 336	−9.2
4	55,185	2373.2	− 2485	−111.8	× 45 / 336	−15
5	55,186	2417.7	− 2528	−110.3	× 59 / 336	−19.4
6	55,187	2427.6	− 2552	−124.4	× 60 / 336	−22.2
7	55,188	2441.4	− 2567	−125.6	× 54 / 336	−20.2
8	55,189	2449.1	− 2586	−136.9	× 58 / 336	−23.6
Sum, rounded to a whole point						−110

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −94, −99, −99, −97, −89, −106, −110, −121, −110 → −102.8
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 5 · 2016→2017: 0 · 2017→2018: 2 · 2018→2019: 8 · 2019→2022: 17 · 2022→2023: 4 · 2023→2024: 11 · 2024→2025: 11 → average 7.3
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 7.3 × 2.66 = 19.4. Upper limit −83.4, lower limit −122.2.

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.