Ducor 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	100,475	2388.1	− 2432	−43.9	× 18 / 126	−6.3
4	100,478	2372.0	− 2473	−101	× 26 / 126	−20.8
5	100,479	2424.0	− 2502	−78	× 26 / 126	−16.1
6	100,482	2476.6	− 2531	−54.4	× 20 / 126	−8.6
7	100,483	2494.8	− 2552	−57.2	× 18 / 126	−8.2
8	100,486	2495.9	− 2567	−71.1	× 18 / 126	−10.2
Sum, rounded to a whole point						−70

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,168	2368.8	− 2432	−63.2	× 19 / 117	−10.3
4	93,170	2431.5	− 2473	−41.5	× 18 / 117	−6.4
5	93,173	2439.8	− 2502	−62.2	× 27 / 117	−14.4
6	93,175	2474.1	− 2531	−56.9	× 18 / 117	−8.8
7	93,176	2532.5	− 2552	−19.5	× 19 / 117	−3.2
8	93,179	2498.0	− 2567	−69	× 16 / 117	−9.4
Sum, rounded to a whole point						−52

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	95,936	2355.3	− 2432	−76.7	× 14 / 122	−8.8
4	95,938	2419.9	− 2473	−53.1	× 19 / 122	−8.3
5	95,940	2429.8	− 2502	−72.2	× 19 / 122	−11.2
6	95,943	2465.6	− 2531	−65.4	× 32 / 122	−17.2
7	95,944	2545.3	− 2552	−6.7	× 18 / 122	−1
8	95,946	2587.1	− 2567	20.1	× 20 / 122	3.3
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
4	96,126	2366.0	− 2473	−107	× 15 / 95	−16.9
5	96,128	2380.9	− 2502	−121.1	× 17 / 95	−21.7
6	96,130	2461.1	− 2531	−69.9	× 15 / 95	−11
7	96,132	2503.8	− 2552	−48.2	× 32 / 95	−16.2
8	96,134	2573.8	− 2567	6.8	× 16 / 95	1.1
Sum, rounded to a whole point						−65

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	96,787	2352.5	− 2432	−79.5	× 11 / 110	−8
4	96,788	2345.2	− 2473	−127.8	× 11 / 110	−12.8
5	96,789	2394.7	− 2502	−107.3	× 19 / 110	−18.5
6	96,790	2424.9	− 2531	−106.1	× 20 / 110	−19.3
7	96,791	2495.7	− 2552	−56.3	× 17 / 110	−8.7
8	96,792	2539.1	− 2567	−27.9	× 32 / 110	−8.1
Sum, rounded to a whole point						−75

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	96,987	2283.2	− 2432	−148.8	× 17 / 73	−34.7
5	96,989	2384.4	− 2502	−117.6	× 14 / 73	−22.6
6	96,990	2439.4	− 2531	−91.6	× 14 / 73	−17.6
7	96,991	2481.6	− 2552	−70.4	× 14 / 73	−13.5
8	96,992	2460.9	− 2567	−106.1	× 14 / 73	−20.3
Sum, rounded to a whole point						−109

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	96,834	2322.2	− 2432	−109.8	× 18 / 88	−22.5
4	96,835	2357.5	− 2473	−115.5	× 14 / 88	−18.4
5	96,836	2385.8	− 2502	−116.2	× 11 / 88	−14.5
6	96,837	2449.9	− 2531	−81.1	× 17 / 88	−15.7
7	96,838	2501.6	− 2552	−50.4	× 16 / 88	−9.2
8	96,839	2485.5	− 2567	−81.5	× 12 / 88	−11.1
Sum, rounded to a whole point						−91

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	96,725	2360.6	− 2432	−71.4	× 12 / 82	−10.4
4	96,726	2379.4	− 2473	−93.6	× 16 / 82	−18.3
5	96,727	2349.8	− 2502	−152.2	× 11 / 82	−20.4
6	96,728	2425.9	− 2531	−105.1	× 12 / 82	−15.4
7	96,729	2502.1	− 2552	−49.9	× 16 / 82	−9.7
8	96,730	2505.3	− 2567	−61.7	× 15 / 82	−11.3
Sum, rounded to a whole point						−86

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	96,450	2378.3	− 2432	−53.7	× 15 / 81	−9.9
4	96,451	2409.5	− 2473	−63.5	× 11 / 81	−8.6
5	96,452	2441.6	− 2502	−60.4	× 14 / 81	−10.4
6	96,453	2416.3	− 2531	−114.7	× 12 / 81	−17
7	96,454	2445.4	− 2552	−106.6	× 12 / 81	−15.8
8	96,455	2502.2	− 2567	−64.8	× 17 / 81	−13.6
Sum, rounded to a whole point						−75

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −70, −52, −43, −65, −75, −109, −91, −86, −75 → −74
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 18 · 2016→2017: 9 · 2017→2018: 22 · 2018→2019: 10 · 2019→2022: 34 · 2022→2023: 18 · 2023→2024: 5 · 2024→2025: 11 → average 15.9
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 15.9 × 2.66 = 42.3. Upper limit −31.7, lower limit −116.3.

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 Ducor Union Elementary

Ducor Union Elementary