Shandon 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	82,113	2361.9	− 2432	−70.1	× 19 / 121	−11
4	82,114	2456.5	− 2473	−16.5	× 20 / 121	−2.7
5	82,117	2455.0	− 2502	−47	× 28 / 121	−10.9
6	82,118	2460.1	− 2531	−70.9	× 14 / 121	−8.2
7	82,121	2528.7	− 2552	−23.3	× 20 / 121	−3.9
8	82,122	2528.6	− 2567	−38.4	× 20 / 121	−6.3
Sum, rounded to a whole point						−43

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	76,159	2393.6	− 2432	−38.4	× 22 / 122	−6.9
4	76,161	2491.2	− 2473	18.2	× 18 / 122	2.7
5	76,163	2477.5	− 2502	−24.5	× 21 / 122	−4.2
6	76,165	2510.6	− 2531	−20.4	× 23 / 122	−3.8
7	76,166	2500.5	− 2552	−51.5	× 15 / 122	−6.3
8	76,169	2536.6	− 2567	−30.4	× 23 / 122	−5.7
Sum, rounded to a whole point						−24

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	78,195	2355.6	− 2432	−76.4	× 30 / 130	−17.6
4	78,197	2472.2	− 2473	−0.8	× 18 / 130	−0.1
5	78,200	2510.8	− 2502	8.8	× 19 / 130	1.3
6	78,202	2467.5	− 2531	−63.5	× 22 / 130	−10.7
7	78,204	2522.5	− 2552	−29.5	× 20 / 130	−4.5
8	78,206	2565.2	− 2567	−1.8	× 21 / 130	−0.3
Sum, rounded to a whole point						−32

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	78,346	2392.6	− 2432	−39.4	× 29 / 130	−8.8
4	78,348	2422.2	− 2473	−50.8	× 26 / 130	−10.2
5	78,351	2488.7	− 2502	−13.3	× 18 / 130	−1.8
6	78,353	2516.7	− 2531	−14.3	× 16 / 130	−1.8
7	78,354	2504.5	− 2552	−47.5	× 22 / 130	−8
8	78,357	2543.6	− 2567	−23.4	× 19 / 130	−3.4
Sum, rounded to a whole point						−34

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	78,874	2357.9	− 2432	−74.1	× 18 / 125	−10.7
4	78,875	2414.9	− 2473	−58.1	× 29 / 125	−13.5
5	78,876	2412.5	− 2502	−89.5	× 24 / 125	−17.2
6	78,877	2462.7	− 2531	−68.3	× 15 / 125	−8.2
7	78,878	2552.7	− 2552	0.7	× 17 / 125	0.1
8	78,879	2501.6	− 2567	−65.4	× 22 / 125	−11.5
Sum, rounded to a whole point						−61

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	79,128	2364.5	− 2432	−67.5	× 17 / 123	−9.3
4	79,129	2420.2	− 2473	−52.8	× 18 / 123	−7.7
5	79,130	2424.6	− 2502	−77.4	× 21 / 123	−13.2
6	79,131	2428.4	− 2531	−102.6	× 16 / 123	−13.3
7	79,132	2474.6	− 2552	−77.4	× 27 / 123	−17
8	79,133	2467.5	− 2567	−99.5	× 24 / 123	−19.4
Sum, rounded to a whole point						−80

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	79,108	2418.8	− 2432	−13.2	× 11 / 108	−1.3
4	79,109	2418.2	− 2473	−54.8	× 17 / 108	−8.6
5	79,110	2453.6	− 2502	−48.4	× 20 / 108	−9
6	79,111	2489.4	− 2531	−41.6	× 18 / 108	−6.9
7	79,112	2453.2	− 2552	−98.8	× 19 / 108	−17.4
8	79,113	2508.7	− 2567	−58.3	× 23 / 108	−12.4
Sum, rounded to a whole point						−56

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	79,136	2402.6	− 2432	−29.4	× 12 / 95	−3.7
4	79,137	2402.3	− 2473	−70.7	× 12 / 95	−8.9
5	79,138	2448.4	− 2502	−53.6	× 18 / 95	−10.2
6	79,139	2439.4	− 2531	−91.6	× 17 / 95	−16.4
7	79,140	2502.8	− 2552	−49.2	× 16 / 95	−8.3
8	79,141	2482.5	− 2567	−84.5	× 20 / 95	−17.8
Sum, rounded to a whole point						−65

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	78,814	2411.8	− 2432	−20.2	× 12 / 93	−2.6
4	78,815	2419.8	− 2473	−53.2	× 13 / 93	−7.4
5	78,816	2456.6	− 2502	−45.4	× 14 / 93	−6.8
6	78,817	2517.5	− 2531	−13.5	× 19 / 93	−2.8
7	78,818	2501.2	− 2552	−50.8	× 20 / 93	−10.9
8	78,819	2525.7	− 2567	−41.3	× 15 / 93	−6.7
Sum, rounded to a whole point						−37

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −43, −24, −32, −34, −61, −80, −56, −65, −37 → −48
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 19 · 2016→2017: 8 · 2017→2018: 2 · 2018→2019: 27 · 2019→2022: 19 · 2022→2023: 24 · 2023→2024: 9 · 2024→2025: 28 → average 17
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 17 × 2.66 = 45.2. Upper limit −2.8, lower limit −93.2.

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