Keyes Union: math · Schoolio

The shaded band is this district'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	96,868	2420.4	− 2436	−15.6	× 116 / 627	−2.9
4	96,871	2449.0	− 2485	−36	× 103 / 627	−5.9
5	96,872	2490.8	− 2528	−37.2	× 106 / 627	−6.3
6	96,875	2477.8	− 2552	−74.2	× 112 / 627	−13.3
7	96,876	2483.6	− 2567	−83.4	× 86 / 627	−11.4
8	96,879	2504.0	− 2586	−82	× 87 / 627	−11.4
11	96,880	2539.0	− 2628	−89	× 17 / 627	−2.4
Sum, rounded to a whole point						−54

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	89,824	2416.5	− 2436	−19.5	× 103 / 647	−3.1
4	89,826	2460.0	− 2485	−25	× 109 / 647	−4.2
5	89,829	2480.7	− 2528	−47.3	× 113 / 647	−8.3
6	89,831	2513.4	− 2552	−38.6	× 107 / 647	−6.4
7	89,833	2501.8	− 2567	−65.2	× 110 / 647	−11.1
8	89,835	2482.3	− 2586	−103.7	× 90 / 647	−14.4
11	89,836	2530.6	− 2628	−97.4	× 15 / 647	−2.3
Sum, rounded to a whole point						−50

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	92,448	2425.9	− 2436	−10.1	× 100 / 651	−1.6
4	92,451	2462.9	− 2485	−22.1	× 101 / 651	−3.4
5	92,452	2489.5	− 2528	−38.5	× 106 / 651	−6.3
6	92,454	2511.8	− 2552	−40.2	× 113 / 651	−7
7	92,456	2512.8	− 2567	−54.2	× 100 / 651	−8.3
8	92,459	2505.8	− 2586	−80.2	× 110 / 651	−13.6
11	92,460	2535.0	− 2628	−93	× 21 / 651	−3
Sum, rounded to a whole point						−43

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	92,647	2415.7	− 2436	−20.3	× 116 / 668	−3.5
4	92,649	2461.7	− 2485	−23.3	× 102 / 668	−3.6
5	92,651	2473.2	− 2528	−54.8	× 110 / 668	−9
6	92,653	2526.7	− 2552	−25.3	× 103 / 668	−3.9
7	92,655	2531.7	− 2567	−35.3	× 113 / 668	−6
8	92,657	2539.7	− 2586	−46.3	× 99 / 668	−6.9
11	92,659	2565.0	− 2628	−63	× 25 / 668	−2.4
Sum, rounded to a whole point						−35

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,286	2430.3	− 2436	−5.7	× 105 / 662	−0.9
4	93,287	2471.7	− 2485	−13.3	× 114 / 662	−2.3
5	93,288	2481.4	− 2528	−46.6	× 100 / 662	−7
6	93,289	2508.5	− 2552	−43.5	× 106 / 662	−7
7	93,290	2543.2	− 2567	−23.8	× 101 / 662	−3.6
8	93,291	2550.4	− 2586	−35.6	× 114 / 662	−6.1
11	93,292	2505.2	− 2628	−122.8	× 22 / 662	−4.1
Sum, rounded to a whole point						−31

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	91,301	2373.6	− 2436	−62.4	× 112 / 630	−11.1
4	91,302	2452.8	− 2485	−32.2	× 113 / 630	−5.8
5	91,303	2453.3	− 2528	−74.7	× 96 / 630	−11.4
6	91,304	2479.1	− 2552	−72.9	× 108 / 630	−12.5
7	91,305	2489.8	− 2567	−77.2	× 98 / 630	−12
8	91,306	2493.8	− 2586	−92.2	× 89 / 630	−13
11	91,307	2564.9	− 2628	−63.1	× 14 / 630	−1.4
Sum, rounded to a whole point						−67

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,517	2411.9	− 2436	−24.1	× 100 / 631	−3.8
4	93,518	2448.4	− 2485	−36.6	× 112 / 631	−6.5
5	93,519	2474.0	− 2528	−54	× 117 / 631	−10
6	93,520	2498.1	− 2552	−53.9	× 89 / 631	−7.6
7	93,521	2525.5	− 2567	−41.5	× 91 / 631	−6
8	93,522	2511.5	− 2586	−74.5	× 101 / 631	−11.9
11	93,523	2552.1	− 2628	−75.9	× 21 / 631	−2.5
Sum, rounded to a whole point						−48

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,417	2406.7	− 2436	−29.3	× 104 / 639	−4.8
4	93,418	2454.1	− 2485	−30.9	× 104 / 639	−5
5	93,419	2458.3	− 2528	−69.7	× 111 / 639	−12.1
6	93,420	2506.6	− 2552	−45.4	× 117 / 639	−8.3
7	93,421	2474.8	− 2567	−92.2	× 86 / 639	−12.4
8	93,422	2540.4	− 2586	−45.6	× 94 / 639	−6.7
11	93,423	2521.9	− 2628	−106.1	× 23 / 639	−3.8
Sum, rounded to a whole point						−53

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,300	2416.6	− 2436	−19.4	× 107 / 667	−3.1
4	93,301	2444.3	− 2485	−40.7	× 107 / 667	−6.5
5	93,302	2457.4	− 2528	−70.6	× 102 / 667	−10.8
6	93,303	2480.8	− 2552	−71.2	× 111 / 667	−11.8
7	93,304	2506.4	− 2567	−60.6	× 118 / 667	−10.7
8	93,305	2493.8	− 2586	−92.2	× 96 / 667	−13.3
11	93,306	2549.4	− 2628	−78.6	× 26 / 667	−3.1
Sum, rounded to a whole point						−59

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,030	2413.2	− 2436	−22.8	× 112 / 673	−3.8
4	93,031	2445.6	− 2485	−39.4	× 109 / 673	−6.4
5	93,032	2461.4	− 2528	−66.6	× 113 / 673	−11.2
6	93,033	2490.7	− 2552	−61.3	× 104 / 673	−9.5
7	93,034	2484.1	− 2567	−82.9	× 108 / 673	−13.3
8	93,035	2551.8	− 2586	−34.2	× 112 / 673	−5.7
11	93,036	2493.3	− 2628	−134.7	× 15 / 673	−3
Sum, rounded to a whole point						−53

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	92,630	2401.9	− 2436	−34.1	× 96 / 655	−5
4	92,631	2464.6	− 2485	−20.4	× 102 / 655	−3.2
5	92,632	2464.3	− 2528	−63.7	× 113 / 655	−11
6	92,633	2487.7	− 2552	−64.3	× 112 / 655	−11
7	92,634	2501.6	− 2567	−65.4	× 102 / 655	−10.2
8	92,635	2495.3	− 2586	−90.7	× 109 / 655	−15.1
11	92,636	2586.5	− 2628	−41.5	× 21 / 655	−1.3
Sum, rounded to a whole point						−57

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −54, −50, −43, −35, −31, −67, −48, −53, −59, −53, −57 → −50
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: 7 · 2017→2018: 8 · 2018→2019: 4 · 2019→2021: 36 · 2021→2022: 19 · 2022→2023: 5 · 2023→2024: 6 · 2024→2025: 6 · 2025→2026: 4 → average 9.9
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 9.9 × 2.66 = 26.3. Upper limit −23.7, lower limit −76.3.

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 — for a district, the total across its schools. From 2014–15, 2015–16, 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.

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