Oak Valley Union Elementary: math

The shaded band is this district'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	100,804	2394.9	− 2436	−41.1	× 62 / 337	−7.6
4	100,805	2432.6	− 2485	−52.4	× 75 / 337	−11.7
5	100,808	2449.4	− 2528	−78.6	× 53 / 337	−12.4
6	100,809	2514.9	− 2552	−37.1	× 47 / 337	−5.2
7	100,812	2533.9	− 2567	−33.1	× 45 / 337	−4.4
8	100,813	2571.5	− 2586	−14.5	× 55 / 337	−2.4
Sum, rounded to a whole point						−44

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,506	2417.0	− 2436	−19	× 64 / 356	−3.4
4	93,509	2434.1	− 2485	−50.9	× 68 / 356	−9.7
5	93,510	2445.1	− 2528	−82.9	× 69 / 356	−16.1
6	93,512	2454.0	− 2552	−98	× 60 / 356	−16.5
7	93,515	2539.1	− 2567	−27.9	× 51 / 356	−4
8	93,517	2556.8	− 2586	−29.2	× 44 / 356	−3.6
Sum, rounded to a whole point						−53

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	96,269	2424.6	− 2436	−11.4	× 53 / 360	−1.7
4	96,271	2454.6	− 2485	−30.4	× 64 / 360	−5.4
5	96,273	2452.5	− 2528	−75.5	× 65 / 360	−13.6
6	96,275	2497.7	− 2552	−54.3	× 66 / 360	−10
7	96,276	2496.4	− 2567	−70.6	× 61 / 360	−12
8	96,278	2599.0	− 2586	13	× 51 / 360	1.8
Sum, rounded to a whole point						−41

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	96,454	2459.8	− 2436	23.8	× 59 / 357	3.9
4	96,457	2482.5	− 2485	−2.5	× 46 / 357	−0.3
5	96,458	2496.9	− 2528	−31.1	× 61 / 357	−5.3
6	96,461	2471.9	− 2552	−80.1	× 65 / 357	−14.6
7	96,462	2516.6	− 2567	−50.4	× 63 / 357	−8.9
8	96,465	2551.8	− 2586	−34.2	× 63 / 357	−6
Sum, rounded to a whole point						−31

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	97,128	2450.2	− 2436	14.2	× 68 / 372	2.6
4	97,129	2498.4	− 2485	13.4	× 61 / 372	2.2
5	97,130	2486.9	− 2528	−41.1	× 52 / 372	−5.7
6	97,131	2524.8	− 2552	−27.2	× 65 / 372	−4.8
7	97,132	2500.6	− 2567	−66.4	× 64 / 372	−11.4
8	97,133	2586.9	− 2586	0.9	× 62 / 372	0.2
Sum, rounded to a whole point						−17

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	97,312	2442.1	− 2436	6.1	× 59 / 360	1
4	97,313	2477.5	− 2485	−7.5	× 57 / 360	−1.2
5	97,314	2474.7	− 2528	−53.3	× 64 / 360	−9.5
6	97,315	2484.2	− 2552	−67.8	× 73 / 360	−13.7
7	97,316	2522.3	− 2567	−44.7	× 58 / 360	−7.2
8	97,317	2498.2	− 2586	−87.8	× 49 / 360	−12
Sum, rounded to a whole point						−43

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	97,159	2445.9	− 2436	9.9	× 54 / 363	1.5
4	97,160	2486.9	− 2485	1.9	× 64 / 363	0.3
5	97,161	2499.6	− 2528	−28.4	× 54 / 363	−4.2
6	97,162	2479.3	− 2552	−72.7	× 64 / 363	−12.8
7	97,163	2499.7	− 2567	−67.3	× 70 / 363	−13
8	97,164	2528.6	− 2586	−57.4	× 57 / 363	−9
Sum, rounded to a whole point						−37

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	97,046	2450.7	− 2436	14.7	× 59 / 360	2.4
4	97,047	2469.1	− 2485	−15.9	× 57 / 360	−2.5
5	97,048	2466.9	− 2528	−61.1	× 63 / 360	−10.7
6	97,049	2503.0	− 2552	−49	× 54 / 360	−7.4
7	97,050	2488.5	− 2567	−78.5	× 64 / 360	−14
8	97,051	2503.4	− 2586	−82.6	× 63 / 360	−14.5
Sum, rounded to a whole point						−47

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	96,765	2468.1	− 2436	32.1	× 61 / 347	5.6
4	96,766	2482.0	− 2485	−3	× 60 / 347	−0.5
5	96,767	2473.2	− 2528	−54.8	× 57 / 347	−9
6	96,768	2497.6	− 2552	−54.4	× 62 / 347	−9.7
7	96,769	2534.7	− 2567	−32.3	× 49 / 347	−4.6
8	96,770	2497.8	− 2586	−88.2	× 58 / 347	−14.7
Sum, rounded to a whole point						−33

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −44, −53, −41, −31, −17, −43, −37, −47, −33 → −38.4
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 9 · 2016→2017: 12 · 2017→2018: 10 · 2018→2019: 14 · 2019→2022: 26 · 2022→2023: 6 · 2023→2024: 10 · 2024→2025: 14 → average 12.6
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 12.6 × 2.66 = 33.5. Upper limit −4.9, lower limit −71.9.

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 — for a district, the total across its schools. From 2014–15, 2015–16, 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.

Schools in Oak Valley Union Elementary

Oak Valley Elementary