Adelante Charter: 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	85,655	2401.4	− 2436	−34.6	× 43 / 128	−11.6
4	85,658	2419.1	− 2485	−65.9	× 38 / 128	−19.6
5	85,660	2421.6	− 2528	−106.4	× 23 / 128	−19.1
6	85,662	2476.8	− 2552	−75.2	× 24 / 128	−14.1
Sum, rounded to a whole point						−64

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	79,474	2432.9	− 2436	−3.1	× 36 / 133	−0.8
4	79,476	2435.1	− 2485	−49.9	× 41 / 133	−15.4
5	79,478	2468.0	− 2528	−60	× 35 / 133	−15.8
6	79,480	2473.8	− 2552	−78.2	× 21 / 133	−12.3
Sum, rounded to a whole point						−44

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	81,637	2451.8	− 2436	15.8	× 41 / 148	4.4
4	81,639	2418.9	− 2485	−66.1	× 33 / 148	−14.7
5	81,642	2456.2	− 2528	−71.8	× 40 / 148	−19.4
6	81,643	2498.2	− 2552	−53.8	× 34 / 148	−12.4
Sum, rounded to a whole point						−42

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	81,824	2406.2	− 2436	−29.8	× 41 / 154	−7.9
4	81,827	2419.7	− 2485	−65.3	× 40 / 154	−17
5	81,828	2436.6	− 2528	−91.4	× 34 / 154	−20.2
6	81,831	2477.5	− 2552	−74.5	× 39 / 154	−18.9
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	82,334	2415.0	− 2436	−21	× 37 / 149	−5.2
4	82,335	2427.5	− 2485	−57.5	× 38 / 149	−14.7
5	82,336	2471.1	− 2528	−56.9	× 40 / 149	−15.3
6	82,337	2469.3	− 2552	−82.7	× 34 / 149	−18.9
Sum, rounded to a whole point						−54

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	80,654	2393.1	− 2436	−42.9	× 29 / 112	−11.1
4	80,655	2423.1	− 2485	−61.9	× 27 / 112	−14.9
5	80,656	2435.2	− 2528	−92.8	× 23 / 112	−19.1
6	80,657	2462.2	− 2552	−89.8	× 33 / 112	−26.5
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	82,541	2386.7	− 2436	−49.3	× 40 / 157	−12.6
4	82,542	2461.2	− 2485	−23.8	× 42 / 157	−6.4
5	82,543	2434.2	− 2528	−93.8	× 38 / 157	−22.7
6	82,544	2480.6	− 2552	−71.4	× 37 / 157	−16.8
Sum, rounded to a whole point						−58

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	82,507	2402.8	− 2436	−33.2	× 36 / 152	−7.9
4	82,508	2439.0	− 2485	−46	× 40 / 152	−12.1
5	82,509	2459.9	− 2528	−68.1	× 38 / 152	−17
6	82,510	2492.1	− 2552	−59.9	× 38 / 152	−15
Sum, rounded to a whole point						−52

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	82,521	2443.9	− 2436	7.9	× 42 / 160	2.1
4	82,522	2469.2	− 2485	−15.8	× 39 / 160	−3.9
5	82,523	2470.3	− 2528	−57.7	× 40 / 160	−14.4
6	82,524	2522.4	− 2552	−29.6	× 39 / 160	−7.2
Sum, rounded to a whole point						−23

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	82,207	2447.1	− 2436	11.1	× 48 / 163	3.3
4	82,208	2538.4	− 2485	53.4	× 38 / 163	12.4
5	82,209	2516.8	− 2528	−11.2	× 37 / 163	−2.5
6	82,210	2550.1	− 2552	−1.9	× 40 / 163	−0.5
Sum, rounded to a whole point						13

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −64, −44, −42, −64, −54, −72, −58, −52, −23, 13 → −46
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 20 · 2016→2017: 2 · 2017→2018: 22 · 2018→2019: 10 · 2019→2021: 18 · 2021→2022: 14 · 2022→2023: 6 · 2023→2024: 29 · 2024→2025: 36 → average 17.4
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 17.4 × 2.66 = 46.3. Upper limit 0.3, lower limit −92.3.

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.