Stonegate 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	105,391	2449.5	− 2436	13.5	× 110 / 534	2.8
4	105,394	2432.5	− 2485	−52.5	× 69 / 534	−6.8
5	105,395	2473.5	− 2528	−54.5	× 96 / 534	−9.8
6	105,398	2489.8	− 2552	−62.2	× 105 / 534	−12.2
7	105,399	2513.7	− 2567	−53.3	× 80 / 534	−8
8	105,402	2536.9	− 2586	−49.1	× 74 / 534	−6.8
Sum, rounded to a whole point						−41

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	97,902	2432.9	− 2436	−3.1	× 88 / 566	−0.5
4	97,904	2502.3	− 2485	17.3	× 109 / 566	3.3
5	97,905	2473.5	− 2528	−54.5	× 81 / 566	−7.8
6	97,907	2511.9	− 2552	−40.1	× 104 / 566	−7.4
7	97,909	2500.0	− 2567	−67	× 104 / 566	−12.3
8	97,911	2569.8	− 2586	−16.2	× 80 / 566	−2.3
Sum, rounded to a whole point						−27

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	100,756	2437.0	− 2436	1	× 90 / 600	0.2
4	100,758	2473.5	− 2485	−11.5	× 92 / 600	−1.8
5	100,761	2496.1	− 2528	−31.9	× 114 / 600	−6.1
6	100,763	2506.3	− 2552	−45.7	× 95 / 600	−7.2
7	100,765	2524.5	− 2567	−42.5	× 107 / 600	−7.6
8	100,767	2529.1	− 2586	−56.9	× 102 / 600	−9.7
Sum, rounded to a whole point						−32

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	100,907	2421.1	− 2436	−14.9	× 85 / 590	−2.1
4	100,910	2495.8	− 2485	10.8	× 90 / 590	1.6
5	100,911	2475.6	− 2528	−52.4	× 90 / 590	−8
6	100,914	2537.6	− 2552	−14.4	× 111 / 590	−2.7
7	100,915	2513.3	− 2567	−53.7	× 98 / 590	−8.9
8	100,918	2556.3	− 2586	−29.7	× 116 / 590	−5.8
Sum, rounded to a whole point						−26

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	101,573	2422.7	− 2436	−13.3	× 82 / 573	−1.9
4	101,574	2470.3	− 2485	−14.7	× 86 / 573	−2.2
5	101,575	2483.7	− 2528	−44.3	× 92 / 573	−7.1
6	101,576	2505.6	− 2552	−46.4	× 97 / 573	−7.9
7	101,577	2551.0	− 2567	−16	× 118 / 573	−3.3
8	101,578	2526.9	− 2586	−59.1	× 98 / 573	−10.1
Sum, rounded to a whole point						−32

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	101,822	2416.1	− 2436	−19.9	× 89 / 527	−3.4
4	101,823	2489.9	− 2485	4.9	× 82 / 527	0.8
5	101,824	2491.2	− 2528	−36.8	× 87 / 527	−6.1
6	101,825	2494.2	− 2552	−57.8	× 86 / 527	−9.4
7	101,826	2514.4	− 2567	−52.6	× 88 / 527	−8.8
8	101,827	2540.7	− 2586	−45.3	× 95 / 527	−8.2
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	101,648	2437.3	− 2436	1.3	× 83 / 533	0.2
4	101,649	2480.0	− 2485	−5	× 85 / 533	−0.8
5	101,650	2481.7	− 2528	−46.3	× 92 / 533	−8
6	101,651	2486.8	− 2552	−65.2	× 94 / 533	−11.5
7	101,652	2532.3	− 2567	−34.7	× 94 / 533	−6.1
8	101,653	2516.8	− 2586	−69.2	× 85 / 533	−11
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	101,535	2416.1	− 2436	−19.9	× 102 / 581	−3.5
4	101,536	2501.2	− 2485	16.2	× 88 / 581	2.5
5	101,537	2498.2	− 2528	−29.8	× 93 / 581	−4.8
6	101,538	2494.8	− 2552	−57.2	× 102 / 581	−10
7	101,539	2519.9	− 2567	−47.1	× 94 / 581	−7.6
8	101,540	2528.9	− 2586	−57.1	× 102 / 581	−10
Sum, rounded to a whole point						−33

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	101,203	2426.5	− 2436	−9.5	× 99 / 564	−1.7
4	101,204	2476.8	− 2485	−8.2	× 95 / 564	−1.4
5	101,205	2491.6	− 2528	−36.4	× 90 / 564	−5.8
6	101,206	2479.7	− 2552	−72.3	× 95 / 564	−12.2
7	101,207	2514.7	− 2567	−52.3	× 97 / 564	−9
8	101,208	2536.2	− 2586	−49.8	× 88 / 564	−7.8
Sum, rounded to a whole point						−38

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −41, −27, −32, −26, −32, −35, −37, −33, −38 → −33.4
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 14 · 2016→2017: 5 · 2017→2018: 6 · 2018→2019: 6 · 2019→2022: 3 · 2022→2023: 2 · 2023→2024: 4 · 2024→2025: 5 → average 5.6
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 5.6 × 2.66 = 14.9. Upper limit −18.5, lower limit −48.3.

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