Valentine Peyton 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	80,545	2399.1	− 2436	−36.9	× 99 / 589	−6.2
4	80,547	2429.1	− 2485	−55.9	× 66 / 589	−6.3
5	80,550	2438.3	− 2528	−89.7	× 132 / 589	−20.1
6	80,551	2504.0	− 2552	−48	× 99 / 589	−8.1
7	80,553	2519.1	− 2567	−47.9	× 96 / 589	−7.8
8	80,555	2528.6	− 2586	−57.4	× 97 / 589	−9.5
Sum, rounded to a whole point						−58

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	74,647	2423.7	− 2436	−12.3	× 93 / 560	−2
4	74,648	2452.0	− 2485	−33	× 99 / 560	−5.8
5	74,651	2461.5	− 2528	−66.5	× 64 / 560	−7.6
6	74,652	2493.6	− 2552	−58.4	× 116 / 560	−12.1
7	74,654	2515.1	− 2567	−51.9	× 92 / 560	−8.5
8	74,656	2551.2	− 2586	−34.8	× 96 / 560	−6
Sum, rounded to a whole point						−42

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	76,631	2413.1	− 2436	−22.9	× 85 / 551	−3.5
4	76,634	2451.3	− 2485	−33.7	× 87 / 551	−5.3
5	76,635	2465.6	− 2528	−62.4	× 94 / 551	−10.6
6	76,638	2515.3	− 2552	−36.7	× 64 / 551	−4.3
7	76,639	2503.9	− 2567	−63.1	× 124 / 551	−14.2
8	76,641	2546.6	− 2586	−39.4	× 97 / 551	−6.9
Sum, rounded to a whole point						−45

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	76,814	2435.5	− 2436	−0.5	× 82 / 533	−0.1
4	76,817	2444.9	− 2485	−40.1	× 86 / 533	−6.5
5	76,818	2484.3	− 2528	−43.7	× 90 / 533	−7.4
6	76,821	2509.6	− 2552	−42.4	× 92 / 533	−7.3
7	76,822	2527.4	− 2567	−39.6	× 67 / 533	−5
8	76,825	2509.6	− 2586	−76.4	× 116 / 533	−16.6
Sum, rounded to a whole point						−43

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	77,321	2451.3	− 2436	15.3	× 74 / 504	2.2
4	77,322	2472.2	− 2485	−12.8	× 93 / 504	−2.4
5	77,323	2470.5	− 2528	−57.5	× 81 / 504	−9.2
6	77,324	2507.0	− 2552	−45	× 92 / 504	−8.2
7	77,325	2531.9	− 2567	−35.1	× 96 / 504	−6.7
8	77,326	2540.2	− 2586	−45.8	× 68 / 504	−6.2
Sum, rounded to a whole point						−30

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	77,473	2415.0	− 2436	−21	× 94 / 536	−3.7
4	77,474	2447.1	− 2485	−37.9	× 95 / 536	−6.7
5	77,475	2489.4	− 2528	−38.6	× 92 / 536	−6.6
6	77,476	2517.3	− 2552	−34.7	× 95 / 536	−6.2
7	77,477	2541.9	− 2567	−25.1	× 76 / 536	−3.6
8	77,478	2552.5	− 2586	−33.5	× 84 / 536	−5.3
Sum, rounded to a whole point						−32

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	77,459	2424.0	− 2436	−12	× 92 / 556	−2
4	77,460	2459.3	− 2485	−25.7	× 99 / 556	−4.6
5	77,461	2497.0	− 2528	−31	× 96 / 556	−5.4
6	77,462	2528.8	− 2552	−23.2	× 96 / 556	−4
7	77,463	2587.9	− 2567	20.9	× 94 / 556	3.5
8	77,464	2573.1	− 2586	−12.9	× 79 / 556	−1.8
Sum, rounded to a whole point						−14

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	77,459	2423.3	− 2436	−12.7	× 79 / 553	−1.8
4	77,460	2463.0	− 2485	−22	× 96 / 553	−3.8
5	77,461	2472.6	− 2528	−55.4	× 102 / 553	−10.2
6	77,462	2553.1	− 2552	1.1	× 91 / 553	0.2
7	77,463	2565.9	− 2567	−1.1	× 93 / 553	−0.2
8	77,464	2616.4	− 2586	30.4	× 92 / 553	5.1
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	77,113	2428.9	− 2436	−7.1	× 73 / 518	−1
4	77,114	2444.8	− 2485	−40.2	× 83 / 518	−6.4
5	77,115	2490.7	− 2528	−37.3	× 91 / 518	−6.6
6	77,116	2525.9	− 2552	−26.1	× 92 / 518	−4.6
7	77,117	2553.1	− 2567	−13.9	× 84 / 518	−2.3
8	77,118	2601.5	− 2586	15.5	× 95 / 518	2.8
Sum, rounded to a whole point						−18

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −58, −42, −45, −43, −30, −32, −14, −11, −18 → −32.6
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 16 · 2016→2017: 3 · 2017→2018: 2 · 2018→2019: 13 · 2019→2022: 2 · 2022→2023: 18 · 2023→2024: 3 · 2024→2025: 7 → 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 −11.3, lower limit −53.9.

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