Spreckels 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	46,392	2436.3	− 2432	4.3	× 88 / 628	0.6
4	46,393	2477.8	− 2473	4.8	× 103 / 628	0.8
5	46,396	2511.1	− 2502	9.1	× 106 / 628	1.5
6	46,397	2519.1	− 2531	−11.9	× 120 / 628	−2.3
7	46,400	2551.2	− 2552	−0.8	× 98 / 628	−0.1
8	46,401	2560.4	− 2567	−6.6	× 113 / 628	−1.2
Sum, rounded to a whole point						−1

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	43,106	2445.3	− 2432	13.3	× 96 / 639	2
4	43,107	2488.9	− 2473	15.9	× 92 / 639	2.3
5	43,110	2502.1	− 2502	0.1	× 107 / 639	0
6	43,111	2518.6	− 2531	−12.4	× 115 / 639	−2.2
7	43,113	2585.4	− 2552	33.4	× 114 / 639	6
8	43,116	2566.8	− 2567	−0.2	× 115 / 639	0
Sum, rounded to a whole point						8

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	44,169	2417.1	− 2432	−14.9	× 85 / 625	−2
4	44,171	2493.6	− 2473	20.6	× 98 / 625	3.2
5	44,173	2502.8	− 2502	0.8	× 90 / 625	0.1
6	44,175	2520.4	− 2531	−10.6	× 115 / 625	−2
7	44,177	2567.7	− 2552	15.7	× 119 / 625	3
8	44,179	2587.7	− 2567	20.7	× 118 / 625	3.9
Sum, rounded to a whole point						6

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	44,189	2445.4	− 2432	13.4	× 98 / 627	2.1
4	44,192	2490.3	− 2473	17.3	× 89 / 627	2.5
5	44,193	2508.4	− 2502	6.4	× 104 / 627	1.1
6	44,196	2530.7	− 2531	−0.3	× 99 / 627	0
7	44,197	2585.3	− 2552	33.3	× 116 / 627	6.2
8	44,200	2589.3	− 2567	22.3	× 121 / 627	4.3
Sum, rounded to a whole point						16

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	44,316	2434.7	− 2432	2.7	× 101 / 627	0.4
4	44,317	2491.1	− 2473	18.1	× 103 / 627	3
5	44,318	2535.8	− 2502	33.8	× 87 / 627	4.7
6	44,319	2546.2	− 2531	15.2	× 109 / 627	2.6
7	44,320	2592.1	− 2552	40.1	× 116 / 627	7.4
8	44,321	2605.7	− 2567	38.7	× 111 / 627	6.9
Sum, rounded to a whole point						25

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	43,069	2412.1	− 2432	−19.9	× 99 / 604	−3.3
4	43,070	2459.3	− 2473	−13.7	× 101 / 604	−2.3
5	43,071	2497.3	− 2502	−4.7	× 95 / 604	−0.7
6	43,072	2532.6	− 2531	1.6	× 92 / 604	0.2
7	43,073	2594.1	− 2552	42.1	× 111 / 604	7.7
8	43,074	2591.9	− 2567	24.9	× 106 / 604	4.4
Sum, rounded to a whole point						6

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	44,070	2396.6	− 2432	−35.4	× 103 / 616	−5.9
4	44,071	2484.7	− 2473	11.7	× 95 / 616	1.8
5	44,072	2494.6	− 2502	−7.4	× 108 / 616	−1.3
6	44,073	2538.1	− 2531	7.1	× 93 / 616	1.1
7	44,074	2572.0	− 2552	20	× 105 / 616	3.4
8	44,075	2588.5	− 2567	21.5	× 112 / 616	3.9
Sum, rounded to a whole point						3

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	44,058	2434.1	− 2432	2.1	× 88 / 614	0.3
4	44,059	2454.9	− 2473	−18.1	× 102 / 614	−3
5	44,060	2513.2	− 2502	11.2	× 103 / 614	1.9
6	44,061	2537.5	− 2531	6.5	× 102 / 614	1.1
7	44,062	2584.4	− 2552	32.4	× 118 / 614	6.2
8	44,063	2557.3	− 2567	−9.7	× 101 / 614	−1.6
Sum, rounded to a whole point						5

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	43,884	2425.9	− 2432	−6.1	× 84 / 589	−0.9
4	43,885	2497.6	− 2473	24.6	× 88 / 589	3.7
5	43,886	2516.6	− 2502	14.6	× 97 / 589	2.4
6	43,887	2515.8	− 2531	−15.2	× 95 / 589	−2.5
7	43,888	2557.0	− 2552	5	× 113 / 589	1
8	43,889	2580.1	− 2567	13.1	× 112 / 589	2.5
Sum, rounded to a whole point						6

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	43,633	2431.6	− 2432	−0.4	× 83 / 569	−0.1
4	43,634	2472.9	− 2473	−0.1	× 86 / 569	0
5	43,635	2525.3	− 2502	23.3	× 91 / 569	3.7
6	43,636	2535.9	− 2531	4.9	× 89 / 569	0.8
7	43,637	2562.7	− 2552	10.7	× 109 / 569	2
8	43,638	2584.6	− 2567	17.6	× 111 / 569	3.4
Sum, rounded to a whole point						10

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −1, 8, 6, 16, 25, 6, 3, 5, 6, 10 → 8.4
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: 2 · 2017→2018: 10 · 2018→2019: 9 · 2019→2021: 19 · 2021→2022: 3 · 2022→2023: 2 · 2023→2024: 1 · 2024→2025: 4 → average 6.6
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 6.6 × 2.66 = 17.6. Upper limit 26, lower limit −9.2.

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.