Van Deene Avenue Elementary: 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	32,457	2370.9	− 2432	−61.1	× 60 / 218	−16.8
4	32,460	2412.2	− 2473	−60.8	× 68 / 218	−19
5	32,461	2494.3	− 2502	−7.7	× 56 / 218	−2
6	32,464	2517.8	− 2531	−13.2	× 34 / 218	−2.1
Sum, rounded to a whole point						−40

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	30,669	2416.8	− 2432	−15.2	× 45 / 202	−3.4
4	30,672	2447.9	− 2473	−25.1	× 58 / 202	−7.2
5	30,673	2464.1	− 2502	−37.9	× 56 / 202	−10.5
6	30,675	2513.5	− 2531	−17.5	× 43 / 202	−3.7
Sum, rounded to a whole point						−25

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	31,235	2365.7	− 2432	−66.3	× 56 / 181	−20.5
4	31,236	2473.1	− 2473	0.1	× 39 / 181	0
5	31,239	2459.1	− 2502	−42.9	× 52 / 181	−12.3
6	31,240	2537.5	− 2531	6.5	× 34 / 181	1.2
Sum, rounded to a whole point						−32

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	31,281	2431.5	− 2432	−0.5	× 35 / 162	−0.1
4	31,283	2448.2	− 2473	−24.8	× 51 / 162	−7.8
5	31,285	2536.0	− 2502	34	× 40 / 162	8.4
6	31,287	2519.2	− 2531	−11.8	× 36 / 162	−2.6
Sum, rounded to a whole point						−2

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	31,453	2423.7	− 2432	−8.3	× 39 / 152	−2.1
4	31,454	2493.8	− 2473	20.8	× 37 / 152	5.1
5	31,455	2477.6	− 2502	−24.4	× 49 / 152	−7.9
6	31,456	2560.4	− 2531	29.4	× 27 / 152	5.2
Sum, rounded to a whole point						0

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	31,470	2412.6	− 2432	−19.4	× 52 / 161	−6.3
4	31,471	2482.7	− 2473	9.7	× 44 / 161	2.7
5	31,472	2492.6	− 2502	−9.4	× 37 / 161	−2.2
6	31,473	2503.8	− 2531	−27.2	× 28 / 161	−4.7
Sum, rounded to a whole point						−11

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	31,527	2423.4	− 2432	−8.6	× 46 / 176	−2.2
4	31,528	2498.0	− 2473	25	× 57 / 176	8.1
5	31,529	2486.6	− 2502	−15.4	× 44 / 176	−3.9
6	31,530	2554.7	− 2531	23.7	× 29 / 176	3.9
Sum, rounded to a whole point						6

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	31,393	2389.6	− 2432	−42.4	× 47 / 170	−11.7
4	31,394	2465.6	− 2473	−7.4	× 44 / 170	−1.9
5	31,395	2533.8	− 2502	31.8	× 55 / 170	10.3
6	31,396	2481.6	− 2531	−49.4	× 24 / 170	−7
Sum, rounded to a whole point						−10

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	31,252	2446.8	− 2432	14.8	× 40 / 170	3.5
4	31,253	2475.0	− 2473	2	× 41 / 170	0.5
5	31,254	2550.8	− 2502	48.8	× 43 / 170	12.3
6	31,255	2543.6	− 2531	12.6	× 46 / 170	3.4
Sum, rounded to a whole point						20

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −40, −25, −32, −2, 0, −11, 6, −10, 20 → −10.4
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 15 · 2016→2017: 7 · 2017→2018: 30 · 2018→2019: 2 · 2019→2022: 11 · 2022→2023: 17 · 2023→2024: 16 · 2024→2025: 30 → average 16
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 16 × 2.66 = 42.6. Upper limit 32.2, lower limit −53.

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.