Valinda School Of Academics: 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	39,639	2407.1	− 2436	−28.9	× 66 / 370	−5.2
4	39,641	2432.2	− 2485	−52.8	× 66 / 370	−9.4
5	39,644	2453.5	− 2528	−74.5	× 55 / 370	−11.1
6	39,646	2444.1	− 2552	−107.9	× 57 / 370	−16.6
7	39,647	2496.2	− 2567	−70.8	× 68 / 370	−13
8	39,649	2556.0	− 2586	−30	× 58 / 370	−4.7
Sum, rounded to a whole point						−60

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	36,745	2400.8	− 2436	−35.2	× 45 / 371	−4.3
4	36,747	2422.7	− 2485	−62.3	× 70 / 371	−11.8
5	36,749	2474.9	− 2528	−53.1	× 62 / 371	−8.9
6	36,750	2474.8	− 2552	−77.2	× 65 / 371	−13.5
7	36,753	2497.8	− 2567	−69.2	× 66 / 371	−12.3
8	36,754	2563.6	− 2586	−22.4	× 63 / 371	−3.8
Sum, rounded to a whole point						−55

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	37,511	2398.6	− 2436	−37.4	× 57 / 374	−5.7
4	37,512	2418.4	− 2485	−66.6	× 45 / 374	−8
5	37,515	2461.5	− 2528	−66.5	× 65 / 374	−11.6
6	37,517	2477.2	− 2552	−74.8	× 67 / 374	−13.4
7	37,519	2496.6	− 2567	−70.4	× 74 / 374	−13.9
8	37,520	2539.6	− 2586	−46.4	× 66 / 374	−8.2
Sum, rounded to a whole point						−61

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	37,463	2386.9	− 2436	−49.1	× 61 / 372	−8.1
4	37,465	2427.9	− 2485	−57.1	× 56 / 372	−8.6
5	37,467	2458.0	− 2528	−70	× 46 / 372	−8.7
6	37,469	2518.3	− 2552	−33.7	× 65 / 372	−5.9
7	37,471	2490.7	− 2567	−76.3	× 74 / 372	−15.2
8	37,473	2537.8	− 2586	−48.2	× 70 / 372	−9.1
Sum, rounded to a whole point						−55

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	37,670	2398.3	− 2436	−37.7	× 64 / 392	−6.2
4	37,671	2430.6	− 2485	−54.4	× 74 / 392	−10.3
5	37,672	2475.0	− 2528	−53	× 57 / 392	−7.7
6	37,673	2493.1	− 2552	−58.9	× 52 / 392	−7.8
7	37,674	2513.0	− 2567	−54	× 75 / 392	−10.3
8	37,675	2534.7	− 2586	−51.3	× 70 / 392	−9.2
Sum, rounded to a whole point						−51

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	37,567	2358.1	− 2436	−77.9	× 61 / 380	−12.5
4	37,568	2438.0	− 2485	−47	× 45 / 380	−5.6
5	37,569	2450.8	− 2528	−77.2	× 71 / 380	−14.4
6	37,570	2478.6	− 2552	−73.4	× 71 / 380	−13.7
7	37,571	2448.9	− 2567	−118.1	× 65 / 380	−20.2
8	37,572	2497.4	− 2586	−88.6	× 67 / 380	−15.6
Sum, rounded to a whole point						−82

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	37,598	2398.8	− 2436	−37.2	× 48 / 366	−4.9
4	37,599	2409.5	− 2485	−75.5	× 60 / 366	−12.4
5	37,600	2464.7	− 2528	−63.3	× 45 / 366	−7.8
6	37,601	2465.5	− 2552	−86.5	× 73 / 366	−17.3
7	37,602	2481.7	− 2567	−85.3	× 73 / 366	−17
8	37,603	2478.7	− 2586	−107.3	× 67 / 366	−19.6
Sum, rounded to a whole point						−79

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	37,450	2400.5	− 2436	−35.5	× 51 / 374	−4.8
4	37,451	2440.6	− 2485	−44.4	× 48 / 374	−5.7
5	37,452	2435.4	− 2528	−92.6	× 67 / 374	−16.6
6	37,453	2480.0	− 2552	−72	× 52 / 374	−10
7	37,454	2482.3	− 2567	−84.7	× 76 / 374	−17.2
8	37,455	2505.7	− 2586	−80.3	× 80 / 374	−17.2
Sum, rounded to a whole point						−72

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	37,234	2396.9	− 2436	−39.1	× 51 / 152	−13.1
4	37,235	2444.6	− 2485	−40.4	× 54 / 152	−14.4
5	37,236	2471.2	− 2528	−56.8	× 47 / 152	−17.6
Sum, rounded to a whole point						−45

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −60, −55, −61, −55, −51, −82, −79, −72, −45 → −62.2
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 5 · 2016→2017: 6 · 2017→2018: 6 · 2018→2019: 4 · 2019→2022: 31 · 2022→2023: 3 · 2023→2024: 7 · 2024→2025: 27 → average 11.1
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 11.1 × 2.66 = 29.5. Upper limit −32.7, lower limit −91.7.

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.