Loomis 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	53,910	2444.6	− 2432	12.6	× 322 / 1903	2.1
4	53,913	2486.5	− 2473	13.5	× 298 / 1903	2.1
5	53,914	2536.2	− 2502	34.2	× 310 / 1903	5.6
6	53,917	2557.3	− 2531	26.3	× 326 / 1903	4.5
7	53,918	2589.3	− 2552	37.3	× 316 / 1903	6.2
8	53,921	2601.1	− 2567	34.1	× 331 / 1903	5.9
Sum, rounded to a whole point						26

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,080	2436.4	− 2432	4.4	× 292 / 1950	0.7
4	50,081	2490.5	− 2473	17.5	× 350 / 1950	3.1
5	50,084	2540.9	− 2502	38.9	× 320 / 1950	6.4
6	50,086	2574.4	− 2531	43.4	× 331 / 1950	7.4
7	50,087	2601.5	− 2552	49.5	× 330 / 1950	8.4
8	50,089	2621.8	− 2567	54.8	× 327 / 1950	9.2
Sum, rounded to a whole point						35

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	51,493	2448.6	− 2432	16.6	× 300 / 2012	2.5
4	51,496	2475.9	− 2473	2.9	× 325 / 2012	0.5
5	51,497	2522.8	− 2502	20.8	× 362 / 2012	3.7
6	51,499	2569.5	− 2531	38.5	× 347 / 2012	6.6
7	51,501	2604.2	− 2552	52.2	× 340 / 2012	8.8
8	51,503	2619.0	− 2567	52	× 338 / 2012	8.7
Sum, rounded to a whole point						31

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	51,523	2448.5	− 2432	16.5	× 300 / 2029	2.4
4	51,526	2502.9	− 2473	29.9	× 325 / 2029	4.8
5	51,527	2537.5	− 2502	35.5	× 335 / 2029	5.9
6	51,530	2572.6	− 2531	41.6	× 381 / 2029	7.8
7	51,531	2611.1	− 2552	59.1	× 349 / 2029	10.2
8	51,534	2629.8	− 2567	62.8	× 339 / 2029	10.5
Sum, rounded to a whole point						42

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	51,716	2453.6	− 2432	21.6	× 305 / 2013	3.3
4	51,717	2503.4	− 2473	30.4	× 315 / 2013	4.8
5	51,718	2548.6	− 2502	46.6	× 331 / 2013	7.7
6	51,719	2573.2	− 2531	42.2	× 345 / 2013	7.2
7	51,720	2617.7	− 2552	65.7	× 370 / 2013	12.1
8	51,721	2637.7	− 2567	70.7	× 347 / 2013	12.2
Sum, rounded to a whole point						47

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	51,656	2461.8	− 2432	29.8	× 280 / 1902	4.4
4	51,657	2493.5	− 2473	20.5	× 316 / 1902	3.4
5	51,658	2535.7	− 2502	33.7	× 338 / 1902	6
6	51,659	2577.2	− 2531	46.2	× 334 / 1902	8.1
7	51,660	2611.0	− 2552	59	× 316 / 1902	9.8
8	51,661	2636.4	− 2567	69.4	× 318 / 1902	11.6
Sum, rounded to a whole point						43

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	51,625	2448.7	− 2432	16.7	× 311 / 1952	2.7
4	51,626	2501.7	− 2473	28.7	× 302 / 1952	4.4
5	51,627	2546.4	− 2502	44.4	× 330 / 1952	7.5
6	51,628	2567.3	− 2531	36.3	× 347 / 1952	6.5
7	51,629	2607.0	− 2552	55	× 336 / 1952	9.5
8	51,630	2613.4	− 2567	46.4	× 326 / 1952	7.7
Sum, rounded to a whole point						38

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	51,441	2463.4	− 2432	31.4	× 301 / 1964	4.8
4	51,442	2497.5	− 2473	24.5	× 330 / 1964	4.1
5	51,443	2552.5	− 2502	50.5	× 311 / 1964	8
6	51,444	2571.1	− 2531	40.1	× 335 / 1964	6.8
7	51,445	2605.3	− 2552	53.3	× 340 / 1964	9.2
8	51,446	2629.3	− 2567	62.3	× 347 / 1964	11
Sum, rounded to a whole point						44

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	51,225	2458.7	− 2432	26.7	× 296 / 1915	4.1
4	51,226	2505.2	− 2473	32.2	× 309 / 1915	5.2
5	51,227	2549.9	− 2502	47.9	× 332 / 1915	8.3
6	51,228	2578.7	− 2531	47.7	× 310 / 1915	7.7
7	51,229	2613.7	− 2552	61.7	× 326 / 1915	10.5
8	51,230	2617.5	− 2567	50.5	× 342 / 1915	9
Sum, rounded to a whole point						45

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	51,102	2458.2	− 2432	26.2	× 295 / 1899	4.1
4	51,103	2503.8	− 2473	30.8	× 315 / 1899	5.1
5	51,104	2558.2	− 2502	56.2	× 318 / 1899	9.4
6	51,105	2576.1	− 2531	45.1	× 339 / 1899	8.1
7	51,106	2596.4	− 2552	44.4	× 304 / 1899	7.1
8	51,107	2621.2	− 2567	54.2	× 328 / 1899	9.4
Sum, rounded to a whole point						43

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. 26, 35, 31, 42, 47, 43, 38, 44, 45, 43 → 39.4
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: 4 · 2017→2018: 11 · 2018→2019: 5 · 2019→2022: 4 · 2022→2023: 5 · 2023→2024: 6 · 2024→2025: 1 · 2025→2026: 2 → average 5.2
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 5.2 × 2.66 = 13.8. Upper limit 53.2, lower limit 25.6.

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.

Loomis Union Elementary