Ventura Charter School Of Arts And Global Educatio: 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	102,862	2467.8	− 2436	31.8	× 58 / 246	7.5
4	102,863	2493.8	− 2485	8.8	× 56 / 246	2
5	102,866	2500.8	− 2528	−27.2	× 52 / 246	−5.7
6	102,867	2531.4	− 2552	−20.6	× 28 / 246	−2.3
7	102,870	2567.0	− 2567	0	× 36 / 246	0
8	102,871	2582.4	− 2586	−3.6	× 16 / 246	−0.2
Sum, rounded to a whole point						1

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	95,573	2451.3	− 2436	15.3	× 58 / 254	3.5
4	95,576	2518.2	− 2485	33.2	× 50 / 254	6.5
5	95,578	2518.3	− 2528	−9.7	× 52 / 254	−2
6	95,580	2526.3	− 2552	−25.7	× 37 / 254	−3.7
7	95,582	2604.8	− 2567	37.8	× 27 / 254	4
8	95,584	2618.7	− 2586	32.7	× 30 / 254	3.9
Sum, rounded to a whole point						12

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	98,350	2452.6	− 2436	16.6	× 51 / 260	3.3
4	98,352	2470.8	− 2485	−14.2	× 58 / 260	−3.2
5	98,354	2532.0	− 2528	4	× 54 / 260	0.8
6	98,356	2528.0	− 2552	−24	× 42 / 260	−3.9
7	98,359	2590.8	− 2567	23.8	× 31 / 260	2.8
8	98,361	2636.3	− 2586	50.3	× 24 / 260	4.6
Sum, rounded to a whole point						5

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	98,509	2466.6	− 2436	30.6	× 53 / 268	6.1
4	98,512	2508.7	− 2485	23.7	× 52 / 268	4.6
5	98,513	2495.1	− 2528	−32.9	× 54 / 268	−6.6
6	98,516	2569.7	− 2552	17.7	× 43 / 268	2.8
7	98,517	2572.8	− 2567	5.8	× 32 / 268	0.7
8	98,520	2577.7	− 2586	−8.3	× 34 / 268	−1.1
Sum, rounded to a whole point						7

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	99,171	2464.5	− 2436	28.5	× 52 / 271	5.5
4	99,172	2515.2	− 2485	30.2	× 49 / 271	5.5
5	99,173	2521.9	− 2528	−6.1	× 56 / 271	−1.3
6	99,174	2526.2	− 2552	−25.8	× 40 / 271	−3.8
7	99,175	2627.8	− 2567	60.8	× 41 / 271	9.2
8	99,176	2610.8	− 2586	24.8	× 33 / 271	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	99,364	2452.4	− 2436	16.4	× 55 / 273	3.3
4	99,365	2437.8	− 2485	−47.2	× 50 / 273	−8.6
5	99,366	2507.9	− 2528	−20.1	× 54 / 273	−4
6	99,367	2540.7	− 2552	−11.3	× 40 / 273	−1.7
7	99,368	2575.2	− 2567	8.2	× 39 / 273	1.2
8	99,369	2596.8	− 2586	10.8	× 35 / 273	1.4
Sum, rounded to a whole point						−8

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	99,205	2449.3	− 2436	13.3	× 57 / 272	2.8
4	99,206	2486.1	− 2485	1.1	× 53 / 272	0.2
5	99,207	2485.3	− 2528	−42.7	× 55 / 272	−8.6
6	99,208	2563.9	− 2552	11.9	× 44 / 272	1.9
7	99,209	2533.2	− 2567	−33.8	× 34 / 272	−4.2
8	99,210	2586.7	− 2586	0.7	× 29 / 272	0.1
Sum, rounded to a whole point						−8

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	99,111	2427.4	− 2436	−8.6	× 53 / 277	−1.6
4	99,112	2480.1	− 2485	−4.9	× 54 / 277	−1
5	99,113	2510.4	− 2528	−17.6	× 48 / 277	−3
6	99,114	2532.1	− 2552	−19.9	× 50 / 277	−3.6
7	99,115	2577.7	− 2567	10.7	× 41 / 277	1.6
8	99,116	2555.5	− 2586	−30.5	× 31 / 277	−3.4
Sum, rounded to a whole point						−11

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	98,805	2428.3	− 2436	−7.7	× 51 / 279	−1.4
4	98,806	2472.9	− 2485	−12.1	× 55 / 279	−2.4
5	98,807	2504.5	− 2528	−23.5	× 55 / 279	−4.6
6	98,808	2552.7	− 2552	0.7	× 37 / 279	0.1
7	98,809	2555.5	− 2567	−11.5	× 45 / 279	−1.9
8	98,810	2607.9	− 2586	21.9	× 36 / 279	2.8
Sum, rounded to a whole point						−7

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. 1, 12, 5, 7, 18, −8, −8, −11, −7 → 1
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 11 · 2016→2017: 7 · 2017→2018: 2 · 2018→2019: 11 · 2019→2022: 26 · 2022→2023: 0 · 2023→2024: 3 · 2024→2025: 4 → average 8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 8 × 2.66 = 21.3. Upper limit 22.3, lower limit −20.3.

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.