De Anza Magnet: 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	14,901	2373.5	− 2436	−62.5	× 47 / 347	−8.5
4	14,902	2414.1	− 2485	−70.9	× 67 / 347	−13.7
5	14,905	2439.4	− 2528	−88.6	× 33 / 347	−8.4
6	14,906	2470.2	− 2552	−81.8	× 70 / 347	−16.5
7	14,909	2510.4	− 2567	−56.6	× 70 / 347	−11.4
8	14,910	2519.6	− 2586	−66.4	× 60 / 347	−11.5
Sum, rounded to a whole point						−70

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	13,928	2383.7	− 2436	−52.3	× 43 / 323	−7
4	13,931	2430.2	− 2485	−54.8	× 41 / 323	−7
5	13,933	2452.3	− 2528	−75.7	× 66 / 323	−15.5
6	13,934	2466.8	− 2552	−85.2	× 35 / 323	−9.2
7	13,937	2512.7	− 2567	−54.3	× 70 / 323	−11.8
8	13,939	2584.0	− 2586	−2	× 68 / 323	−0.4
Sum, rounded to a whole point						−51

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	14,263	2406.6	− 2436	−29.4	× 43 / 296	−4.3
4	14,265	2446.7	− 2485	−38.3	× 38 / 296	−4.9
5	14,268	2478.2	− 2528	−49.8	× 35 / 296	−5.9
6	14,269	2464.4	− 2552	−87.6	× 67 / 296	−19.8
7	14,272	2528.6	− 2567	−38.4	× 49 / 296	−6.4
8	14,274	2600.5	− 2586	14.5	× 64 / 296	3.1
Sum, rounded to a whole point						−38

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	14,272	2362.7	− 2436	−73.3	× 53 / 291	−13.4
4	14,273	2428.8	− 2485	−56.2	× 41 / 291	−7.9
5	14,276	2482.4	− 2528	−45.6	× 30 / 291	−4.7
6	14,277	2504.4	− 2552	−47.6	× 43 / 291	−7
7	14,280	2518.6	− 2567	−48.4	× 68 / 291	−11.3
8	14,281	2617.4	− 2586	31.4	× 56 / 291	6
Sum, rounded to a whole point						−38

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	14,367	2398.7	− 2436	−37.3	× 54 / 326	−6.2
4	14,368	2430.5	− 2485	−54.5	× 55 / 326	−9.2
5	14,369	2479.7	− 2528	−48.3	× 35 / 326	−5.2
6	14,370	2500.7	− 2552	−51.3	× 34 / 326	−5.4
7	14,371	2505.3	− 2567	−61.7	× 73 / 326	−13.8
8	14,372	2590.7	− 2586	4.7	× 75 / 326	1.1
Sum, rounded to a whole point						−39

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	14,372	2401.0	− 2436	−35	× 54 / 414	−4.6
4	14,373	2433.8	− 2485	−51.2	× 55 / 414	−6.8
5	14,374	2420.6	− 2528	−107.4	× 92 / 414	−23.9
6	14,375	2465.9	− 2552	−86.1	× 86 / 414	−17.9
7	14,376	2469.5	− 2567	−97.5	× 69 / 414	−16.3
8	14,377	2536.9	− 2586	−49.1	× 58 / 414	−6.9
Sum, rounded to a whole point						−76

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	14,333	2407.9	− 2436	−28.1	× 53 / 364	−4.1
4	14,334	2431.9	− 2485	−53.1	× 62 / 364	−9
5	14,335	2473.5	− 2528	−54.5	× 60 / 364	−9
6	14,336	2489.7	− 2552	−62.3	× 60 / 364	−10.3
7	14,337	2507.5	− 2567	−59.5	× 60 / 364	−9.8
8	14,338	2532.1	− 2586	−53.9	× 69 / 364	−10.2
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	14,288	2418.9	− 2436	−17.1	× 56 / 357	−2.7
4	14,289	2438.0	− 2485	−47	× 52 / 357	−6.8
5	14,290	2481.9	− 2528	−46.1	× 58 / 357	−7.5
6	14,291	2505.0	− 2552	−47	× 65 / 357	−8.6
7	14,292	2469.6	− 2567	−97.4	× 63 / 357	−17.2
8	14,293	2575.2	− 2586	−10.8	× 63 / 357	−1.9
Sum, rounded to a whole point						−45

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	14,248	2400.8	− 2436	−35.2	× 54 / 354	−5.4
4	14,249	2435.2	− 2485	−49.8	× 59 / 354	−8.3
5	14,250	2508.8	− 2528	−19.2	× 45 / 354	−2.4
6	14,251	2498.8	− 2552	−53.2	× 65 / 354	−9.8
7	14,252	2556.3	− 2567	−10.7	× 68 / 354	−2.1
8	14,253	2562.6	− 2586	−23.4	× 63 / 354	−4.2
Sum, rounded to a whole point						−32

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −70, −51, −38, −38, −39, −76, −52, −45, −32 → −49
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 19 · 2016→2017: 13 · 2017→2018: 0 · 2018→2019: 1 · 2019→2022: 37 · 2022→2023: 24 · 2023→2024: 7 · 2024→2025: 13 → average 14.3
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 14.3 × 2.66 = 38. Upper limit −11, lower limit −87.

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.