Kohl Open Elementary: math

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	81,058	2375.7	− 2436	−60.3	× 26 / 142	−11
4	81,059	2422.9	− 2485	−62.1	× 27 / 142	−11.8
5	81,062	2460.0	− 2528	−68	× 27 / 142	−12.9
6	81,063	2523.7	− 2552	−28.3	× 21 / 142	−4.2
7	81,066	2524.5	− 2567	−42.5	× 23 / 142	−6.9
8	81,067	2502.7	− 2586	−83.3	× 18 / 142	−10.6
Sum, rounded to a whole point						−57

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	75,150	2423.4	− 2436	−12.6	× 25 / 146	−2.2
4	75,153	2447.2	− 2485	−37.8	× 27 / 146	−7
5	75,154	2441.6	− 2528	−86.4	× 25 / 146	−14.8
6	75,157	2521.6	− 2552	−30.4	× 25 / 146	−5.2
7	75,159	2554.3	− 2567	−12.7	× 22 / 146	−1.9
8	75,160	2517.4	− 2586	−68.6	× 22 / 146	−10.3
Sum, rounded to a whole point						−41

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	77,163	2380.0	− 2436	−56	× 30 / 156	−10.8
4	77,165	2439.4	− 2485	−45.6	× 27 / 156	−7.9
5	77,167	2450.4	− 2528	−77.6	× 26 / 156	−12.9
6	77,169	2468.2	− 2552	−83.8	× 25 / 156	−13.4
7	77,172	2518.3	− 2567	−48.7	× 27 / 156	−8.4
8	77,173	2549.9	− 2586	−36.1	× 21 / 156	−4.9
Sum, rounded to a whole point						−58

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	77,348	2388.1	− 2436	−47.9	× 22 / 155	−6.8
4	77,351	2404.7	− 2485	−80.3	× 30 / 155	−15.5
5	77,353	2455.2	− 2528	−72.8	× 27 / 155	−12.7
6	77,355	2466.1	− 2552	−85.9	× 25 / 155	−13.9
7	77,357	2471.0	− 2567	−96	× 25 / 155	−15.5
8	77,359	2530.5	− 2586	−55.5	× 26 / 155	−9.3
Sum, rounded to a whole point						−74

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	77,871	2388.4	− 2436	−47.6	× 25 / 156	−7.6
4	77,872	2425.6	− 2485	−59.4	× 25 / 156	−9.5
5	77,873	2439.8	− 2528	−88.2	× 30 / 156	−17
6	77,874	2477.1	− 2552	−74.9	× 27 / 156	−13
7	77,875	2492.3	− 2567	−74.7	× 24 / 156	−11.5
8	77,876	2502.7	− 2586	−83.3	× 25 / 156	−13.3
Sum, rounded to a whole point						−72

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	78,011	2429.7	− 2436	−6.3	× 25 / 145	−1.1
4	78,012	2408.3	− 2485	−76.7	× 26 / 145	−13.8
5	78,013	2475.5	− 2528	−52.5	× 24 / 145	−8.7
6	78,014	2461.0	− 2552	−91	× 23 / 145	−14.4
7	78,015	2500.8	− 2567	−66.2	× 21 / 145	−9.6
8	78,016	2491.3	− 2586	−94.7	× 26 / 145	−17
Sum, rounded to a whole point						−65

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	78,003	2376.2	− 2436	−59.8	× 23 / 138	−10
4	78,004	2448.7	− 2485	−36.3	× 27 / 138	−7.1
5	78,005	2428.5	− 2528	−99.5	× 21 / 138	−15.1
6	78,006	2507.9	− 2552	−44.1	× 26 / 138	−8.3
7	78,007	2510.1	− 2567	−56.9	× 21 / 138	−8.7
8	78,008	2501.9	− 2586	−84.1	× 20 / 138	−12.2
Sum, rounded to a whole point						−61

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	78,017	2382.2	− 2436	−53.8	× 24 / 155	−8.3
4	78,018	2410.1	− 2485	−74.9	× 26 / 155	−12.6
5	78,019	2492.2	− 2528	−35.8	× 28 / 155	−6.5
6	78,020	2441.7	− 2552	−110.3	× 26 / 155	−18.5
7	78,021	2544.3	− 2567	−22.7	× 27 / 155	−4
8	78,022	2488.2	− 2586	−97.8	× 24 / 155	−15.1
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	77,685	2395.0	− 2436	−41	× 23 / 155	−6.1
4	77,686	2422.5	− 2485	−62.5	× 27 / 155	−10.9
5	77,687	2432.1	− 2528	−95.9	× 25 / 155	−15.5
6	77,688	2504.0	− 2552	−48	× 27 / 155	−8.4
7	77,689	2469.2	− 2567	−97.8	× 27 / 155	−17
8	77,690	2555.8	− 2586	−30.2	× 26 / 155	−5.1
Sum, rounded to a whole point						−63

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −57, −41, −58, −74, −72, −65, −61, −65, −63 → −61.8
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 16 · 2016→2017: 17 · 2017→2018: 16 · 2018→2019: 2 · 2019→2022: 7 · 2022→2023: 4 · 2023→2024: 4 · 2024→2025: 2 → average 8.5
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 8.5 × 2.66 = 22.6. Upper limit −39.2, lower limit −84.4.

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.