Park 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	68,574	2367.4	− 2436	−68.6	× 123 / 459	−18.4
4	68,577	2385.8	− 2485	−99.2	× 121 / 459	−26.2
5	68,578	2429.0	− 2528	−99	× 124 / 459	−26.7
6	68,581	2481.6	− 2552	−70.4	× 91 / 459	−14
Sum, rounded to a whole point						−85

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	63,521	2374.5	− 2436	−61.5	× 120 / 513	−14.4
4	63,524	2405.9	− 2485	−79.1	× 117 / 513	−18
5	63,526	2411.4	− 2528	−116.6	× 138 / 513	−31.4
6	63,528	2448.7	− 2552	−103.3	× 138 / 513	−27.8
Sum, rounded to a whole point						−92

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	65,320	2364.4	− 2436	−71.6	× 120 / 489	−17.6
4	65,322	2389.9	− 2485	−95.1	× 128 / 489	−24.9
5	65,323	2408.4	− 2528	−119.6	× 111 / 489	−27.1
6	65,325	2433.7	− 2552	−118.3	× 130 / 489	−31.4
Sum, rounded to a whole point						−101

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	65,404	2360.3	− 2436	−75.7	× 115 / 470	−18.5
4	65,406	2387.2	− 2485	−97.8	× 112 / 470	−23.3
5	65,408	2411.7	− 2528	−116.3	× 122 / 470	−30.2
6	65,410	2431.0	− 2552	−121	× 121 / 470	−31.2
Sum, rounded to a whole point						−103

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	65,793	2376.3	− 2436	−59.7	× 129 / 487	−15.8
4	65,794	2399.8	− 2485	−85.2	× 120 / 487	−21
5	65,795	2427.8	− 2528	−100.2	× 111 / 487	−22.8
6	65,796	2456.5	− 2552	−95.5	× 127 / 487	−24.9
Sum, rounded to a whole point						−85

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	65,854	2384.6	− 2436	−51.4	× 114 / 490	−12
4	65,855	2395.0	− 2485	−90	× 114 / 490	−20.9
5	65,856	2422.6	− 2528	−105.4	× 123 / 490	−26.5
6	65,857	2445.1	− 2552	−106.9	× 139 / 490	−30.3
Sum, rounded to a whole point						−90

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	65,861	2381.6	− 2436	−54.4	× 92 / 442	−11.3
4	65,862	2403.7	− 2485	−81.3	× 124 / 442	−22.8
5	65,863	2408.1	− 2528	−119.9	× 106 / 442	−28.8
6	65,864	2462.0	− 2552	−90	× 120 / 442	−24.4
Sum, rounded to a whole point						−87

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	65,829	2404.0	− 2436	−32	× 123 / 445	−8.8
4	65,830	2406.5	− 2485	−78.5	× 94 / 445	−16.6
5	65,831	2397.0	− 2528	−131	× 124 / 445	−36.5
6	65,832	2454.8	− 2552	−97.2	× 104 / 445	−22.7
Sum, rounded to a whole point						−85

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	65,589	2379.2	− 2436	−56.8	× 111 / 429	−14.7
4	65,590	2412.5	− 2485	−72.5	× 112 / 429	−18.9
5	65,591	2426.3	− 2528	−101.7	× 86 / 429	−20.4
6	65,592	2423.3	− 2552	−128.7	× 120 / 429	−36
Sum, rounded to a whole point						−90

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −85, −92, −101, −103, −85, −90, −87, −85, −90 → −90.9
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 7 · 2016→2017: 9 · 2017→2018: 2 · 2018→2019: 18 · 2019→2022: 5 · 2022→2023: 3 · 2023→2024: 2 · 2024→2025: 5 → average 6.4
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 6.4 × 2.66 = 17. Upper limit −73.9, lower limit −107.9.

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.