Oak View Elementary: 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	80,278	2460.5	− 2436	24.5	× 44 / 283	3.8
4	80,279	2467.3	− 2485	−17.7	× 45 / 283	−2.8
5	80,282	2482.9	− 2528	−45.1	× 62 / 283	−9.9
6	80,283	2500.3	− 2552	−51.7	× 35 / 283	−6.4
7	80,286	2584.8	− 2567	17.8	× 49 / 283	3.1
8	80,287	2609.7	− 2586	23.7	× 48 / 283	4
Sum, rounded to a whole point						−8

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	74,386	2485.8	− 2436	49.8	× 46 / 283	8.1
4	74,388	2471.1	− 2485	−13.9	× 47 / 283	−2.3
5	74,390	2498.4	− 2528	−29.6	× 42 / 283	−4.4
6	74,392	2501.6	− 2552	−50.4	× 64 / 283	−11.4
7	74,395	2517.1	− 2567	−49.9	× 34 / 283	−6
8	74,397	2655.9	− 2586	69.9	× 50 / 283	12.3
Sum, rounded to a whole point						−4

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	76,365	2473.2	− 2436	37.2	× 44 / 279	5.9
4	76,368	2487.1	− 2485	2.1	× 47 / 279	0.4
5	76,369	2510.2	− 2528	−17.8	× 51 / 279	−3.3
6	76,371	2550.0	− 2552	−2	× 40 / 279	−0.3
7	76,373	2537.3	− 2567	−29.7	× 70 / 279	−7.5
8	76,375	2544.9	− 2586	−41.1	× 27 / 279	−4
Sum, rounded to a whole point						−9

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	76,552	2446.6	− 2436	10.6	× 38 / 273	1.5
4	76,555	2497.1	− 2485	12.1	× 42 / 273	1.9
5	76,556	2514.8	− 2528	−13.2	× 41 / 273	−2
6	76,559	2531.4	− 2552	−20.6	× 50 / 273	−3.8
7	76,560	2572.7	− 2567	5.7	× 36 / 273	0.8
8	76,563	2591.6	− 2586	5.6	× 66 / 273	1.4
Sum, rounded to a whole point						0

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	77,057	2433.2	− 2436	−2.8	× 49 / 261	−0.5
4	77,058	2506.2	− 2485	21.2	× 39 / 261	3.2
5	77,059	2504.7	− 2528	−23.3	× 42 / 261	−3.7
6	77,060	2528.3	− 2552	−23.7	× 44 / 261	−4
7	77,061	2547.3	− 2567	−19.7	× 49 / 261	−3.7
8	77,062	2654.4	− 2586	68.4	× 38 / 261	10
Sum, rounded to a whole point						1

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	75,596	2434.4	− 2436	−1.6	× 46 / 258	−0.3
4	75,597	2474.2	− 2485	−10.8	× 45 / 258	−1.9
5	75,598	2488.9	− 2528	−39.1	× 45 / 258	−6.8
6	75,599	2525.9	− 2552	−26.1	× 39 / 258	−3.9
7	75,600	2546.9	− 2567	−20.1	× 42 / 258	−3.3
8	75,601	2564.2	− 2586	−21.8	× 41 / 258	−3.5
Sum, rounded to a whole point						−20

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	77,209	2443.3	− 2436	7.3	× 36 / 258	1
4	77,210	2485.0	− 2485	0	× 47 / 258	0
5	77,211	2491.8	− 2528	−36.2	× 48 / 258	−6.7
6	77,212	2534.8	− 2552	−17.2	× 44 / 258	−2.9
7	77,213	2575.7	− 2567	8.7	× 42 / 258	1.4
8	77,214	2563.3	− 2586	−22.7	× 41 / 258	−3.6
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	77,195	2450.8	− 2436	14.8	× 46 / 265	2.6
4	77,196	2506.9	− 2485	21.9	× 37 / 265	3.1
5	77,197	2518.2	− 2528	−9.8	× 47 / 265	−1.7
6	77,198	2515.1	− 2552	−36.9	× 43 / 265	−6
7	77,199	2574.9	− 2567	7.9	× 47 / 265	1.4
8	77,200	2565.7	− 2586	−20.3	× 45 / 265	−3.4
Sum, rounded to a whole point						−4

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	77,195	2470.9	− 2436	34.9	× 37 / 258	5
4	77,196	2484.9	− 2485	−0.1	× 49 / 258	0
5	77,197	2523.6	− 2528	−4.4	× 34 / 258	−0.6
6	77,198	2554.8	− 2552	2.8	× 46 / 258	0.5
7	77,199	2540.7	− 2567	−26.3	× 44 / 258	−4.5
8	77,200	2572.2	− 2586	−13.8	× 48 / 258	−2.6
Sum, rounded to a whole point						−2

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	76,851	2451.0	− 2436	15	× 35 / 243	2.2
4	76,852	2510.4	− 2485	25.4	× 37 / 243	3.9
5	76,853	2536.4	− 2528	8.4	× 48 / 243	1.7
6	76,854	2540.4	− 2552	−11.6	× 40 / 243	−1.9
7	76,855	2565.3	− 2567	−1.7	× 43 / 243	−0.3
8	76,856	2552.1	− 2586	−33.9	× 40 / 243	−5.6
Sum, rounded to a whole point						0

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −8, −4, −9, 0, 1, −20, −11, −4, −2, 0 → −5.7
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 4 · 2016→2017: 5 · 2017→2018: 9 · 2018→2019: 1 · 2019→2021: 21 · 2021→2022: 9 · 2022→2023: 7 · 2023→2024: 2 · 2024→2025: 2 → average 6.7
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 6.7 × 2.66 = 17.8. Upper limit 12.1, lower limit −23.5.

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 2014–15, 2015–16, 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.