Butteville 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	92,070	2390.2	− 2432	−41.8	× 17 / 130	−5.5
4	92,073	2425.0	− 2473	−48	× 28 / 130	−10.3
5	92,074	2490.3	− 2502	−11.7	× 27 / 130	−2.4
6	92,077	2501.2	− 2531	−29.8	× 20 / 130	−4.6
7	92,078	2536.6	− 2552	−15.4	× 17 / 130	−2
8	92,081	2566.3	− 2567	−0.7	× 21 / 130	−0.1
Sum, rounded to a whole point						−25

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	85,491	2398.5	− 2432	−33.5	× 32 / 145	−7.4
4	85,492	2494.0	− 2473	21	× 14 / 145	2
5	85,494	2509.6	− 2502	7.6	× 31 / 145	1.6
6	85,496	2509.7	− 2531	−21.3	× 28 / 145	−4.1
7	85,498	2538.8	− 2552	−13.2	× 22 / 145	−2
8	85,501	2561.7	− 2567	−5.3	× 18 / 145	−0.7
Sum, rounded to a whole point						−11

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	87,863	2418.9	− 2432	−13.1	× 21 / 141	−2
4	87,865	2457.1	− 2473	−15.9	× 30 / 141	−3.4
5	87,868	2538.7	− 2502	36.7	× 14 / 141	3.6
6	87,870	2524.7	− 2531	−6.3	× 31 / 141	−1.4
7	87,871	2559.8	− 2552	7.8	× 27 / 141	1.5
8	87,873	2561.4	− 2567	−5.6	× 18 / 141	−0.7
Sum, rounded to a whole point						−2

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	88,095	2425.5	− 2432	−6.5	× 21 / 139	−1
4	88,096	2478.8	− 2473	5.8	× 23 / 139	1
5	88,099	2501.7	− 2502	−0.3	× 30 / 139	−0.1
6	88,100	2572.5	− 2531	41.5	× 12 / 139	3.6
7	88,103	2567.8	− 2552	15.8	× 29 / 139	3.3
8	88,104	2580.3	− 2567	13.3	× 24 / 139	2.3
Sum, rounded to a whole point						9

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	88,737	2394.5	− 2432	−37.5	× 19 / 131	−5.4
4	88,738	2484.8	− 2473	11.8	× 21 / 131	1.9
5	88,739	2538.7	− 2502	36.7	× 22 / 131	6.2
6	88,740	2542.0	− 2531	11	× 29 / 131	2.4
7	88,741	2599.1	− 2552	47.1	× 12 / 131	4.3
8	88,742	2562.9	− 2567	−4.1	× 28 / 131	−0.9
Sum, rounded to a whole point						8

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	86,923	2396.1	− 2432	−35.9	× 15 / 113	−4.8
4	86,924	2464.9	− 2473	−8.1	× 19 / 113	−1.4
5	86,925	2451.7	− 2502	−50.3	× 13 / 113	−5.8
6	86,926	2488.7	− 2531	−42.3	× 21 / 113	−7.9
7	86,927	2548.0	− 2552	−4	× 18 / 113	−0.6
8	86,928	2580.4	− 2567	13.4	× 27 / 113	3.2
Sum, rounded to a whole point						−17

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	89,012	2424.1	− 2432	−7.9	× 20 / 119	−1.3
4	89,013	2457.6	− 2473	−15.4	× 15 / 119	−1.9
5	89,014	2506.8	− 2502	4.8	× 21 / 119	0.8
6	89,015	2478.9	− 2531	−52.1	× 20 / 119	−8.8
7	89,016	2552.8	− 2552	0.8	× 23 / 119	0.2
8	89,017	2570.9	− 2567	3.9	× 20 / 119	0.7
Sum, rounded to a whole point						−10

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	88,891	2440.8	− 2432	8.8	× 12 / 102	1
4	88,892	2489.4	− 2473	16.4	× 15 / 102	2.4
5	88,893	2472.2	− 2502	−29.8	× 14 / 102	−4.1
6	88,894	2544.5	− 2531	13.5	× 23 / 102	3
7	88,895	2533.5	− 2552	−18.5	× 17 / 102	−3.1
8	88,896	2534.9	− 2567	−32.1	× 21 / 102	−6.6
Sum, rounded to a whole point						−7

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	88,888	2431.9	− 2432	−0.1	× 14 / 78	0
4	88,889	2486.2	− 2473	13.2	× 13 / 78	2.2
5	88,890	2504.1	− 2502	2.1	× 19 / 78	0.5
7	88,892	2582.8	− 2552	30.8	× 18 / 78	7.1
8	88,893	2572.9	− 2567	5.9	× 14 / 78	1.1
Sum, rounded to a whole point						11

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	88,572	2424.6	− 2432	−7.4	× 22 / 92	−1.8
4	88,573	2463.6	− 2473	−9.4	× 19 / 92	−1.9
5	88,574	2506.1	− 2502	4.1	× 15 / 92	0.7
6	88,575	2518.7	− 2531	−12.3	× 19 / 92	−2.5
8	88,577	2614.9	− 2567	47.9	× 17 / 92	8.9
Sum, rounded to a whole point						3

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	88,265	2408.1	− 2432	−23.9	× 21 / 75	−6.7
4	88,266	2496.2	− 2473	23.2	× 21 / 75	6.5
5	88,267	2494.2	− 2502	−7.8	× 19 / 75	−2
6	88,268	2551.0	− 2531	20	× 14 / 75	3.7
Sum, rounded to a whole point						2

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −25, −11, −2, 9, 8, −17, −10, −7, 11, 3, 2 → −3.5
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: 9 · 2017→2018: 11 · 2018→2019: 1 · 2019→2021: 25 · 2021→2022: 7 · 2022→2023: 3 · 2023→2024: 18 · 2024→2025: 8 · 2025→2026: 1 → average 9.7
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 9.7 × 2.66 = 25.8. Upper limit 22.3, lower limit −29.3.

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.

Schools in Butteville Union Elementary

K–8 schools

Butteville Elementary