Cesar Chavez Language 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.

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	90,931	2368.5	− 2432	−63.5	× 38 / 38	−63.5
Sum, rounded to a whole point						−64

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	91,767	2384.0	− 2432	−48	× 64 / 143	−21.5
4	91,768	2427.2	− 2473	−45.8	× 43 / 143	−13.8
5	91,769	2500.3	− 2502	−1.7	× 36 / 143	−0.4
Sum, rounded to a whole point						−36

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	92,011	2402.1	− 2432	−29.9	× 64 / 618	−3.1
4	92,012	2410.5	− 2473	−62.5	× 52 / 618	−5.3
5	92,013	2467.4	− 2502	−34.6	× 54 / 618	−3
6	92,014	2476.1	− 2531	−54.9	× 56 / 618	−5
7	92,015	2460.1	− 2552	−91.9	× 189 / 618	−28.1
8	92,016	2478.5	− 2567	−88.5	× 203 / 618	−29.1
Sum, rounded to a whole point						−74

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	91,919	2368.4	− 2432	−63.6	× 65 / 602	−6.9
4	91,920	2448.9	− 2473	−24.1	× 58 / 602	−2.3
5	91,921	2466.9	− 2502	−35.1	× 52 / 602	−3
6	91,922	2499.2	− 2531	−31.8	× 53 / 602	−2.8
7	91,923	2464.4	− 2552	−87.6	× 190 / 602	−27.6
8	91,924	2468.7	− 2567	−98.3	× 184 / 602	−30
Sum, rounded to a whole point						−73

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	91,848	2398.0	− 2432	−34	× 62 / 558	−3.8
4	91,849	2412.3	− 2473	−60.7	× 60 / 558	−6.5
5	91,850	2481.3	− 2502	−20.7	× 58 / 558	−2.2
6	91,851	2471.6	− 2531	−59.4	× 42 / 558	−4.5
7	91,852	2460.3	− 2552	−91.7	× 159 / 558	−26.1
8	91,853	2455.6	− 2567	−111.4	× 177 / 558	−35.3
Sum, rounded to a whole point						−78

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	91,556	2401.9	− 2432	−30.1	× 62 / 495	−3.8
4	91,557	2462.9	− 2473	−10.1	× 56 / 495	−1.1
5	91,558	2446.9	− 2502	−55.1	× 54 / 495	−6
6	91,559	2476.7	− 2531	−54.3	× 52 / 495	−5.7
7	91,560	2493.8	− 2552	−58.2	× 127 / 495	−14.9
8	91,561	2484.0	− 2567	−83	× 144 / 495	−24.1
Sum, rounded to a whole point						−56

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −64, −36, −74, −73, −78, −56 → −63.5
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2017→2019: 28 · 2019→2022: 38 · 2022→2023: 1 · 2023→2024: 5 · 2024→2025: 22 → average 18.8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 18.8 × 2.66 = 50. Upper limit −13.5, lower limit −113.5.

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