Stone Corral Elementary: english

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	101,086	2302.9	− 2432	−129.1	× 22 / 89	−31.9
4	101,087	2362.4	− 2473	−110.6	× 18 / 89	−22.4
5	101,090	2346.5	− 2502	−155.5	× 13 / 89	−22.7
6	101,091	2402.8	− 2531	−128.2	× 12 / 89	−17.3
7	101,094	2449.6	− 2552	−102.4	× 12 / 89	−13.8
8	101,095	2474.8	− 2567	−92.2	× 12 / 89	−12.4
Sum, rounded to a whole point						−121

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,793	2279.6	− 2432	−152.4	× 17 / 86	−30.1
4	93,795	2307.2	− 2473	−165.8	× 18 / 86	−34.7
5	93,797	2419.2	− 2502	−82.8	× 17 / 86	−16.4
6	93,798	2451.8	− 2531	−79.2	× 12 / 86	−11.1
7	93,800	2486.1	− 2552	−65.9	× 11 / 86	−8.4
8	93,803	2465.5	− 2567	−101.5	× 11 / 86	−13
Sum, rounded to a whole point						−114

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	96,558	2328.3	− 2432	−103.7	× 15 / 65	−23.9
4	96,561	2376.5	− 2473	−96.5	× 17 / 65	−25.2
5	96,562	2337.7	− 2502	−164.3	× 18 / 65	−45.5
6	96,565	2443.4	− 2531	−87.6	× 15 / 65	−20.2
Sum, rounded to a whole point						−115

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	96,744	2294.2	− 2432	−137.8	× 15 / 66	−31.3
4	96,745	2337.9	− 2473	−135.1	× 11 / 66	−22.5
5	96,748	2418.8	− 2502	−83.2	× 16 / 66	−20.2
6	96,749	2419.2	− 2531	−111.8	× 13 / 66	−22
7	96,752	2489.4	− 2552	−62.6	× 11 / 66	−10.4
Sum, rounded to a whole point						−106

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	97,413	2335.6	− 2432	−96.4	× 16 / 84	−18.4
4	97,414	2329.0	− 2473	−144	× 13 / 84	−22.3
5	97,415	2418.3	− 2502	−83.7	× 13 / 84	−13
6	97,416	2480.4	− 2531	−50.6	× 17 / 84	−10.2
7	97,417	2448.1	− 2552	−103.9	× 13 / 84	−16.1
8	97,418	2495.4	− 2567	−71.6	× 12 / 84	−10.2
Sum, rounded to a whole point						−90

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
4	95,287	2373.5	− 2473	−99.5	× 20 / 80	−24.9
5	95,288	2372.5	− 2502	−129.5	× 15 / 80	−24.3
6	95,289	2353.6	− 2531	−177.4	× 16 / 80	−35.5
7	95,290	2449.4	− 2552	−102.6	× 14 / 80	−18
8	95,291	2470.5	− 2567	−96.5	× 15 / 80	−18.1
Sum, rounded to a whole point						−121

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	97,589	2327.9	− 2432	−104.1	× 24 / 83	−30.1
5	97,591	2432.4	− 2502	−69.6	× 17 / 83	−14.3
6	97,592	2459.2	− 2531	−71.8	× 13 / 83	−11.2
7	97,593	2445.1	− 2552	−106.9	× 14 / 83	−18
8	97,594	2491.5	− 2567	−75.5	× 15 / 83	−13.6
Sum, rounded to a whole point						−87

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	97,436	2303.8	− 2432	−128.2	× 11 / 70	−20.1
4	97,437	2340.1	− 2473	−132.9	× 22 / 70	−41.8
6	97,439	2448.7	− 2531	−82.3	× 15 / 70	−17.6
7	97,440	2478.9	− 2552	−73.1	× 11 / 70	−11.5
8	97,441	2434.7	− 2567	−132.3	× 11 / 70	−20.8
Sum, rounded to a whole point						−112

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	97,331	2365.4	− 2502	−136.6	× 25 / 43	−79.4
7	97,333	2467.8	− 2552	−84.2	× 18 / 43	−35.2
Sum, rounded to a whole point						−115

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	97,048	2406.8	− 2432	−25.2	× 12 / 50	−6
6	97,051	2460.3	− 2531	−70.7	× 20 / 50	−28.3
8	97,053	2467.4	− 2567	−99.6	× 18 / 50	−35.9
Sum, rounded to a whole point						−70

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	96,678	2362.3	− 2432	−69.7	× 12 / 29	−28.8
7	96,682	2499.1	− 2552	−52.9	× 17 / 29	−31
Sum, rounded to a whole point						−60

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −121, −114, −115, −106, −90, −121, −87, −112, −115, −70, −60 → −101
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 7 · 2016→2017: 1 · 2017→2018: 9 · 2018→2019: 16 · 2019→2021: 31 · 2021→2022: 34 · 2022→2023: 25 · 2023→2024: 3 · 2024→2025: 45 · 2025→2026: 10 → average 18.1
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 18.1 × 2.66 = 48.1. Upper limit −52.9, lower limit −149.1.

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.

Stone Corral Elementary