Buttonwillow Union 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	16,533	2335.7	− 2432	−96.3	× 42 / 227	−17.8
4	16,536	2367.8	− 2473	−105.2	× 39 / 227	−18.1
5	16,537	2405.4	− 2502	−96.6	× 40 / 227	−17
6	16,540	2449.3	− 2531	−81.7	× 40 / 227	−14.4
7	16,541	2482.5	− 2552	−69.5	× 31 / 227	−9.5
8	16,544	2501.5	− 2567	−65.5	× 35 / 227	−10.1
Sum, rounded to a whole point						−87

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	15,554	2359.6	− 2432	−72.4	× 43 / 239	−13
4	15,557	2378.9	− 2473	−94.1	× 41 / 239	−16.1
5	15,559	2437.0	− 2502	−65	× 42 / 239	−11.4
6	15,561	2435.6	− 2531	−95.4	× 40 / 239	−16
7	15,562	2467.0	− 2552	−85	× 41 / 239	−14.6
8	15,565	2516.3	− 2567	−50.7	× 32 / 239	−6.8
Sum, rounded to a whole point						−78

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	15,876	2383.0	− 2432	−49	× 39 / 241	−7.9
4	15,877	2405.3	− 2473	−67.7	× 39 / 241	−11
5	15,880	2416.0	− 2502	−86	× 45 / 241	−16.1
6	15,882	2472.2	− 2531	−58.8	× 41 / 241	−10
7	15,884	2502.3	− 2552	−49.7	× 37 / 241	−7.6
8	15,885	2532.0	− 2567	−35	× 40 / 241	−5.8
Sum, rounded to a whole point						−58

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	15,893	2356.2	− 2432	−75.8	× 30 / 230	−9.9
4	15,895	2376.8	− 2473	−96.2	× 41 / 230	−17.1
5	15,897	2426.8	− 2502	−75.2	× 37 / 230	−12.1
6	15,899	2455.6	− 2531	−75.4	× 45 / 230	−14.8
7	15,901	2480.3	− 2552	−71.7	× 38 / 230	−11.8
8	15,903	2510.9	− 2567	−56.1	× 39 / 230	−9.5
Sum, rounded to a whole point						−75

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,018	2387.3	− 2432	−44.7	× 39 / 236	−7.4
4	16,019	2395.1	− 2473	−77.9	× 34 / 236	−11.2
5	16,020	2408.8	− 2502	−93.2	× 42 / 236	−16.6
6	16,021	2496.6	− 2531	−34.4	× 38 / 236	−5.5
7	16,022	2495.5	− 2552	−56.5	× 45 / 236	−10.8
8	16,023	2491.3	− 2567	−75.7	× 38 / 236	−12.2
Sum, rounded to a whole point						−64

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,044	2325.8	− 2432	−106.2	× 34 / 215	−16.8
4	16,045	2347.3	− 2473	−125.7	× 34 / 215	−19.9
5	16,046	2361.6	− 2502	−140.4	× 31 / 215	−20.2
6	16,047	2476.2	− 2531	−54.8	× 42 / 215	−10.7
7	16,048	2496.2	− 2552	−55.8	× 34 / 215	−8.8
8	16,049	2496.5	− 2567	−70.5	× 40 / 215	−13.1
Sum, rounded to a whole point						−90

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	15,992	2363.8	− 2432	−68.2	× 26 / 194	−9.1
4	15,993	2365.3	− 2473	−107.7	× 35 / 194	−19.4
5	15,994	2372.8	− 2502	−129.2	× 36 / 194	−24
6	15,995	2428.7	− 2531	−102.3	× 26 / 194	−13.7
7	15,996	2521.8	− 2552	−30.2	× 36 / 194	−5.6
8	15,997	2483.4	− 2567	−83.6	× 35 / 194	−15.1
Sum, rounded to a whole point						−87

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	15,941	2351.3	− 2432	−80.7	× 28 / 190	−11.9
4	15,942	2393.2	− 2473	−79.8	× 27 / 190	−11.3
5	15,943	2392.6	− 2502	−109.4	× 33 / 190	−19
6	15,944	2453.3	− 2531	−77.7	× 35 / 190	−14.3
7	15,945	2469.4	− 2552	−82.6	× 30 / 190	−13
8	15,946	2579.6	− 2567	12.6	× 37 / 190	2.5
Sum, rounded to a whole point						−67

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	15,932	2407.8	− 2432	−24.2	× 35 / 180	−4.7
4	15,933	2413.1	− 2473	−59.9	× 27 / 180	−9
5	15,934	2437.8	− 2502	−64.2	× 23 / 180	−8.2
6	15,935	2466.7	− 2531	−64.3	× 33 / 180	−11.8
7	15,936	2483.8	− 2552	−68.2	× 33 / 180	−12.5
8	15,937	2522.2	− 2567	−44.8	× 29 / 180	−7.2
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	15,947	2360.6	− 2432	−71.4	× 24 / 169	−10.1
4	15,948	2465.4	− 2473	−7.6	× 34 / 169	−1.5
5	15,949	2446.1	− 2502	−55.9	× 27 / 169	−8.9
6	15,950	2447.8	− 2531	−83.2	× 23 / 169	−11.3
7	15,951	2528.9	− 2552	−23.1	× 32 / 169	−4.4
8	15,952	2536.7	− 2567	−30.3	× 29 / 169	−5.2
Sum, rounded to a whole point						−41

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −87, −78, −58, −75, −64, −90, −87, −67, −53, −41 → −70
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: 20 · 2017→2018: 17 · 2018→2019: 11 · 2019→2022: 26 · 2022→2023: 3 · 2023→2024: 20 · 2024→2025: 14 · 2025→2026: 12 → average 14.7
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 14.7 × 2.66 = 39.1. Upper limit −30.9, lower limit −109.1.

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.

Schools in Buttonwillow Union Elementary

K–8 schools

Buttonwillow Elementary