Keith Mccarthy 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
11	58,916	2528.7	− 2583	−54.3	× 69 / 69	−54.3
Sum, rounded to a whole point						−54

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	54,682	2469.1	− 2531	−61.9	× 18 / 128	−8.7
7	54,684	2484.3	− 2552	−67.7	× 16 / 128	−8.5
8	54,685	2511.2	− 2567	−55.8	× 17 / 128	−7.4
11	54,688	2554.2	− 2583	−28.8	× 77 / 128	−17.3
Sum, rounded to a whole point						−42

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	56,274	2505.2	− 2552	−46.8	× 22 / 100	−10.3
8	56,277	2492.0	− 2567	−75	× 23 / 100	−17.3
11	56,278	2527.1	− 2583	−55.9	× 55 / 100	−30.7
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
6	56,371	2452.8	− 2531	−78.2	× 11 / 127	−6.8
7	56,374	2482.4	− 2552	−69.6	× 19 / 127	−10.4
8	56,375	2474.7	− 2567	−92.3	× 38 / 127	−27.6
11	56,378	2520.5	− 2583	−62.5	× 59 / 127	−29
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
7	56,624	2459.6	− 2552	−92.4	× 19 / 105	−16.7
8	56,625	2506.8	− 2567	−60.2	× 23 / 105	−13.2
11	56,626	2550.0	− 2583	−33	× 63 / 105	−19.8
Sum, rounded to a whole point						−50

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	56,697	2467.2	− 2531	−63.8	× 79 / 370	−13.6
7	56,698	2491.2	− 2552	−60.8	× 58 / 370	−9.5
8	56,699	2503.5	− 2567	−63.5	× 84 / 370	−14.4
11	56,700	2557.6	− 2583	−25.4	× 149 / 370	−10.2
Sum, rounded to a whole point						−48

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	56,657	2383.6	− 2432	−48.4	× 34 / 355	−4.6
4	56,658	2418.3	− 2473	−54.7	× 28 / 355	−4.3
5	56,659	2444.8	− 2502	−57.2	× 32 / 355	−5.2
6	56,660	2478.3	− 2531	−52.7	× 42 / 355	−6.2
7	56,661	2501.4	− 2552	−50.6	× 59 / 355	−8.4
8	56,662	2504.3	− 2567	−62.7	× 57 / 355	−10.1
11	56,663	2514.6	− 2583	−68.4	× 103 / 355	−19.8
Sum, rounded to a whole point						−59

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	56,545	2325.9	− 2432	−106.1	× 18 / 324	−5.9
4	56,546	2428.6	− 2473	−44.4	× 25 / 324	−3.4
5	56,547	2455.0	− 2502	−47	× 20 / 324	−2.9
6	56,548	2471.5	− 2531	−59.5	× 30 / 324	−5.5
7	56,549	2443.8	− 2552	−108.2	× 53 / 324	−17.7
8	56,550	2485.5	− 2567	−81.5	× 53 / 324	−13.3
11	56,551	2523.3	− 2583	−59.7	× 125 / 324	−23
Sum, rounded to a whole point						−72

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	56,301	2377.4	− 2432	−54.6	× 13 / 211	−3.4
4	56,302	2402.6	− 2473	−70.4	× 14 / 211	−4.7
5	56,303	2484.5	− 2502	−17.5	× 15 / 211	−1.2
6	56,304	2456.8	− 2531	−74.2	× 31 / 211	−10.9
7	56,305	2467.0	− 2552	−85	× 36 / 211	−14.5
8	56,306	2494.1	− 2567	−72.9	× 44 / 211	−15.2
11	56,307	2516.7	− 2583	−66.3	× 58 / 211	−18.2
Sum, rounded to a whole point						−68

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −54, −42, −58, −74, −50, −48, −59, −72, −68 → −58.3
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 12 · 2016→2017: 16 · 2017→2018: 16 · 2018→2019: 24 · 2019→2022: 2 · 2022→2023: 11 · 2023→2024: 13 · 2024→2025: 4 → average 12.3
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 12.3 × 2.66 = 32.7. Upper limit −25.6, lower limit −91.

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.