Crestmore Elementary: english

The shaded band is this school'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	65,338	2378.9	− 2432	−53.1	× 130 / 508	−13.6
4	65,341	2445.0	− 2473	−28	× 119 / 508	−6.6
5	65,343	2486.0	− 2502	−16	× 115 / 508	−3.6
6	65,345	2494.7	− 2531	−36.3	× 144 / 508	−10.3
Sum, rounded to a whole point						−34

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	60,572	2400.1	− 2432	−31.9	× 119 / 479	−7.9
4	60,574	2441.7	− 2473	−31.3	× 123 / 479	−8
5	60,575	2521.3	− 2502	19.3	× 119 / 479	4.8
6	60,578	2523.0	− 2531	−8	× 118 / 479	−2
Sum, rounded to a whole point						−13

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	62,320	2405.7	− 2432	−26.3	× 91 / 460	−5.2
4	62,321	2453.9	− 2473	−19.1	× 122 / 460	−5.1
5	62,324	2483.8	− 2502	−18.2	× 127 / 460	−5
6	62,325	2532.3	− 2531	1.3	× 120 / 460	0.3
Sum, rounded to a whole point						−15

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	62,397	2400.2	− 2432	−31.8	× 120 / 445	−8.6
4	62,400	2451.6	− 2473	−21.4	× 88 / 445	−4.2
5	62,401	2502.2	− 2502	0.2	× 119 / 445	0.1
6	62,403	2523.8	− 2531	−7.2	× 118 / 445	−1.9
Sum, rounded to a whole point						−15

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	62,670	2409.4	− 2432	−22.6	× 118 / 432	−6.2
4	62,671	2440.9	− 2473	−32.1	× 108 / 432	−8
5	62,672	2512.4	− 2502	10.4	× 89 / 432	2.1
6	62,673	2523.8	− 2531	−7.2	× 117 / 432	−2
Sum, rounded to a whole point						−14

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	62,729	2406.6	− 2432	−25.4	× 88 / 367	−6.1
4	62,730	2415.0	− 2473	−58	× 84 / 367	−13.3
5	62,731	2489.0	− 2502	−13	× 94 / 367	−3.3
6	62,732	2501.9	− 2531	−29.1	× 101 / 367	−8
Sum, rounded to a whole point						−31

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	62,681	2394.5	− 2432	−37.5	× 94 / 355	−9.9
4	62,682	2429.7	− 2473	−43.3	× 86 / 355	−10.5
5	62,683	2458.3	− 2502	−43.7	× 78 / 355	−9.6
6	62,684	2493.6	− 2531	−37.4	× 97 / 355	−10.2
Sum, rounded to a whole point						−40

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	62,636	2394.9	− 2432	−37.1	× 90 / 349	−9.6
4	62,637	2403.3	− 2473	−69.7	× 90 / 349	−18
5	62,638	2470.3	− 2502	−31.7	× 86 / 349	−7.8
6	62,639	2493.2	− 2531	−37.8	× 83 / 349	−9
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	62,405	2425.7	− 2432	−6.3	× 90 / 353	−1.6
4	62,406	2429.7	− 2473	−43.3	× 88 / 353	−10.8
5	62,407	2469.4	− 2502	−32.6	× 87 / 353	−8
6	62,408	2507.2	− 2531	−23.8	× 88 / 353	−5.9
Sum, rounded to a whole point						−26

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −34, −13, −15, −15, −14, −31, −40, −44, −26 → −25.8
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 21 · 2016→2017: 2 · 2017→2018: 0 · 2018→2019: 1 · 2019→2022: 17 · 2022→2023: 9 · 2023→2024: 4 · 2024→2025: 18 → average 9
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 9 × 2.66 = 23.9. Upper limit −1.9, lower limit −49.7.

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. From 2014–15, 2015–16, 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.