Keiller Leadership Academy: 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	74,453	2374.3	− 2432	−57.7	× 28 / 361	−4.5
4	74,454	2426.6	− 2473	−46.4	× 42 / 361	−5.4
5	74,457	2432.6	− 2502	−69.4	× 25 / 361	−4.8
6	74,458	2463.4	− 2531	−67.6	× 79 / 361	−14.8
7	74,461	2504.3	− 2552	−47.7	× 99 / 361	−13.1
8	74,462	2526.8	− 2567	−40.2	× 88 / 361	−9.8
Sum, rounded to a whole point						−52

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	69,162	2359.9	− 2432	−72.1	× 33 / 379	−6.3
4	69,164	2408.5	− 2473	−64.5	× 39 / 379	−6.6
5	69,166	2421.5	− 2502	−80.5	× 44 / 379	−9.3
6	69,168	2466.3	− 2531	−64.7	× 92 / 379	−15.7
7	69,170	2489.3	− 2552	−62.7	× 83 / 379	−13.7
8	69,172	2527.3	− 2567	−39.7	× 88 / 379	−9.2
Sum, rounded to a whole point						−61

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	70,996	2356.1	− 2432	−75.9	× 48 / 407	−9
4	70,997	2409.7	− 2473	−63.3	× 48 / 407	−7.5
5	70,999	2442.6	− 2502	−59.4	× 41 / 407	−6
6	71,001	2501.5	− 2531	−29.5	× 94 / 407	−6.8
7	71,004	2516.2	− 2552	−35.8	× 89 / 407	−7.8
8	71,006	2539.9	− 2567	−27.1	× 87 / 407	−5.8
Sum, rounded to a whole point						−43

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	71,140	2391.2	− 2432	−40.8	× 57 / 422	−5.5
4	71,143	2387.0	− 2473	−86	× 47 / 422	−9.6
5	71,144	2437.9	− 2502	−64.1	× 46 / 422	−7
6	71,147	2496.0	− 2531	−35	× 89 / 422	−7.4
7	71,148	2518.9	− 2552	−33.1	× 99 / 422	−7.8
8	71,151	2524.6	− 2567	−42.4	× 84 / 422	−8.4
Sum, rounded to a whole point						−46

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	71,624	2396.4	− 2432	−35.6	× 50 / 439	−4.1
4	71,625	2432.7	− 2473	−40.3	× 71 / 439	−6.5
5	71,626	2440.3	− 2502	−61.7	× 50 / 439	−7
6	71,627	2515.3	− 2531	−15.7	× 77 / 439	−2.8
7	71,628	2550.6	− 2552	−1.4	× 93 / 439	−0.3
8	71,629	2541.7	− 2567	−25.3	× 98 / 439	−5.6
Sum, rounded to a whole point						−26

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	70,119	2381.7	− 2432	−50.3	× 60 / 387	−7.8
4	70,120	2448.4	− 2473	−24.6	× 39 / 387	−2.5
5	70,121	2450.4	− 2502	−51.6	× 61 / 387	−8.1
6	70,122	2477.0	− 2531	−54	× 88 / 387	−12.3
7	70,123	2538.2	− 2552	−13.8	× 64 / 387	−2.3
8	70,124	2540.3	− 2567	−26.7	× 75 / 387	−5.2
Sum, rounded to a whole point						−38

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	71,724	2376.2	− 2432	−55.8	× 48 / 432	−6.2
4	71,725	2451.6	− 2473	−21.4	× 68 / 432	−3.4
5	71,726	2487.9	− 2502	−14.1	× 50 / 432	−1.6
6	71,727	2507.8	− 2531	−23.2	× 84 / 432	−4.5
7	71,728	2570.3	− 2552	18.3	× 97 / 432	4.1
8	71,729	2547.6	− 2567	−19.4	× 85 / 432	−3.8
Sum, rounded to a whole point						−15

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	71,718	2389.2	− 2432	−42.8	× 57 / 429	−5.7
4	71,719	2455.8	− 2473	−17.2	× 50 / 429	−2
5	71,720	2485.5	− 2502	−16.5	× 72 / 429	−2.8
6	71,721	2533.2	− 2531	2.2	× 72 / 429	0.4
7	71,722	2552.7	− 2552	0.7	× 84 / 429	0.1
8	71,723	2570.1	− 2567	3.1	× 94 / 429	0.7
Sum, rounded to a whole point						−9

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	71,700	2380.7	− 2432	−51.3	× 51 / 420	−6.2
4	71,701	2472.7	− 2473	−0.3	× 62 / 420	0
5	71,702	2476.3	− 2502	−25.7	× 51 / 420	−3.1
6	71,703	2510.4	− 2531	−20.6	× 92 / 420	−4.5
7	71,704	2555.3	− 2552	3.3	× 79 / 420	0.6
8	71,705	2550.9	− 2567	−16.1	× 85 / 420	−3.3
Sum, rounded to a whole point						−17

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	71,416	2369.7	− 2432	−62.3	× 51 / 447	−7.1
4	71,417	2459.4	− 2473	−13.6	× 56 / 447	−1.7
5	71,418	2477.7	− 2502	−24.3	× 71 / 447	−3.9
6	71,419	2495.4	− 2531	−35.6	× 91 / 447	−7.2
7	71,420	2544.3	− 2552	−7.7	× 90 / 447	−1.6
8	71,421	2560.0	− 2567	−7	× 88 / 447	−1.4
Sum, rounded to a whole point						−23

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −52, −61, −43, −46, −26, −38, −15, −9, −17, −23 → −33
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: 18 · 2017→2018: 3 · 2018→2019: 20 · 2019→2021: 12 · 2021→2022: 23 · 2022→2023: 6 · 2023→2024: 8 · 2024→2025: 6 → average 11.7
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 11.7 × 2.66 = 31.1. Upper limit −1.9, lower limit −64.1.

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.