Thomas Edison Charter 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	77,977	2357.4	− 2432	−74.6	× 87 / 398	−16.3
4	77,978	2426.2	− 2473	−46.8	× 64 / 398	−7.5
5	77,981	2450.8	− 2502	−51.2	× 60 / 398	−7.7
6	77,982	2486.8	− 2531	−44.2	× 64 / 398	−7.1
7	77,985	2528.4	− 2552	−23.6	× 62 / 398	−3.7
8	77,986	2510.6	− 2567	−56.4	× 61 / 398	−8.6
Sum, rounded to a whole point						−51

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	72,170	2421.3	− 2432	−10.7	× 88 / 435	−2.2
4	72,173	2432.4	− 2473	−40.6	× 95 / 435	−8.9
5	72,174	2522.7	− 2502	20.7	× 63 / 435	3
6	72,176	2516.2	− 2531	−14.8	× 63 / 435	−2.1
7	72,178	2559.5	− 2552	7.5	× 63 / 435	1.1
8	72,180	2569.0	− 2567	2	× 63 / 435	0.3
Sum, rounded to a whole point						−9

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	74,145	2402.9	− 2432	−29.1	× 86 / 459	−5.5
4	74,146	2470.5	− 2473	−2.5	× 93 / 459	−0.5
5	74,148	2477.4	− 2502	−24.6	× 94 / 459	−5
6	74,151	2545.0	− 2531	14	× 62 / 459	1.9
7	74,152	2554.4	− 2552	2.4	× 61 / 459	0.3
8	74,155	2587.3	− 2567	20.3	× 63 / 459	2.8
Sum, rounded to a whole point						−6

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	74,319	2431.8	− 2432	−0.2	× 83 / 483	0
4	74,320	2433.9	− 2473	−39.1	× 91 / 483	−7.4
5	74,323	2488.8	− 2502	−13.2	× 95 / 483	−2.6
6	74,324	2480.1	− 2531	−50.9	× 92 / 483	−9.7
7	74,327	2577.2	− 2552	25.2	× 61 / 483	3.2
8	74,328	2540.4	− 2567	−26.6	× 61 / 483	−3.4
Sum, rounded to a whole point						−20

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	74,838	2384.7	− 2432	−47.3	× 87 / 497	−8.3
4	74,839	2461.3	− 2473	−11.7	× 88 / 497	−2.1
5	74,840	2479.0	− 2502	−23	× 85 / 497	−3.9
6	74,841	2503.9	− 2531	−27.1	× 89 / 497	−4.9
7	74,842	2559.1	− 2552	7.1	× 86 / 497	1.2
8	74,843	2569.8	− 2567	2.8	× 62 / 497	0.3
Sum, rounded to a whole point						−18

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	75,022	2377.4	− 2432	−54.6	× 57 / 423	−7.4
4	75,023	2366.9	− 2473	−106.1	× 59 / 423	−14.8
5	75,024	2477.5	− 2502	−24.5	× 60 / 423	−3.5
6	75,025	2495.4	− 2531	−35.6	× 79 / 423	−6.6
7	75,026	2532.5	− 2552	−19.5	× 83 / 423	−3.8
8	75,027	2523.5	− 2567	−43.5	× 85 / 423	−8.7
Sum, rounded to a whole point						−45

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	74,992	2396.1	− 2432	−35.9	× 58 / 388	−5.4
4	74,993	2410.5	− 2473	−62.5	× 53 / 388	−8.5
5	74,994	2434.9	− 2502	−67.1	× 58 / 388	−10
6	74,995	2489.4	− 2531	−41.6	× 55 / 388	−5.9
7	74,996	2531.1	− 2552	−20.9	× 84 / 388	−4.5
8	74,997	2543.2	− 2567	−23.8	× 80 / 388	−4.9
Sum, rounded to a whole point						−39

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	75,004	2379.5	− 2432	−52.5	× 59 / 363	−8.5
4	75,005	2422.4	− 2473	−50.6	× 52 / 363	−7.2
5	75,006	2447.5	− 2502	−54.5	× 57 / 363	−8.6
6	75,007	2473.7	− 2531	−57.3	× 60 / 363	−9.5
7	75,008	2520.4	− 2552	−31.6	× 55 / 363	−4.8
8	75,009	2541.3	− 2567	−25.7	× 80 / 363	−5.7
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	74,664	2374.3	− 2432	−57.7	× 67 / 376	−10.3
4	74,665	2435.0	− 2473	−38	× 61 / 376	−6.2
5	74,666	2489.6	− 2502	−12.4	× 56 / 376	−1.8
6	74,667	2474.9	− 2531	−56.1	× 79 / 376	−11.8
7	74,668	2523.7	− 2552	−28.3	× 60 / 376	−4.5
8	74,669	2533.6	− 2567	−33.4	× 53 / 376	−4.7
Sum, rounded to a whole point						−39

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −51, −9, −6, −20, −18, −45, −39, −44, −39 → −30.1
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 42 · 2016→2017: 3 · 2017→2018: 14 · 2018→2019: 2 · 2019→2022: 27 · 2022→2023: 6 · 2023→2024: 5 · 2024→2025: 5 → average 13
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 13 × 2.66 = 34.6. Upper limit 4.5, lower limit −64.7.

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.