Desert 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	25,040	2366.3	− 2436	−69.7	× 117 / 473	−17.2
4	25,042	2385.5	− 2485	−99.5	× 107 / 473	−22.5
5	25,044	2418.6	− 2528	−109.4	× 128 / 473	−29.6
6	25,046	2401.3	− 2552	−150.7	× 121 / 473	−38.6
Sum, rounded to a whole point						−108

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	23,314	2379.1	− 2436	−56.9	× 110 / 459	−13.6
4	23,315	2390.2	− 2485	−94.8	× 129 / 459	−26.6
5	23,318	2396.2	− 2528	−131.8	× 113 / 459	−32.4
6	23,319	2417.1	− 2552	−134.9	× 107 / 459	−31.4
Sum, rounded to a whole point						−104

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	23,776	2386.9	− 2436	−49.1	× 124 / 462	−13.2
4	23,777	2390.1	− 2485	−94.9	× 122 / 462	−25.1
5	23,780	2405.3	− 2528	−122.7	× 121 / 462	−32.1
6	23,782	2415.1	− 2552	−136.9	× 95 / 462	−28.2
Sum, rounded to a whole point						−99

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	23,793	2378.3	− 2436	−57.7	× 95 / 437	−12.5
4	23,795	2422.4	− 2485	−62.6	× 116 / 437	−16.6
5	23,797	2406.6	− 2528	−121.4	× 122 / 437	−33.9
6	23,799	2413.7	− 2552	−138.3	× 104 / 437	−32.9
Sum, rounded to a whole point						−96

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	23,972	2395.9	− 2436	−40.1	× 97 / 406	−9.6
4	23,973	2390.0	− 2485	−95	× 92 / 406	−21.5
5	23,974	2419.6	− 2528	−108.4	× 118 / 406	−31.5
6	23,975	2430.3	− 2552	−121.7	× 99 / 406	−29.7
Sum, rounded to a whole point						−92

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	23,929	2357.7	− 2436	−78.3	× 88 / 374	−18.4
4	23,930	2415.8	− 2485	−69.2	× 95 / 374	−17.6
5	23,931	2402.4	− 2528	−125.6	× 87 / 374	−29.2
6	23,932	2415.4	− 2552	−136.6	× 104 / 374	−38
Sum, rounded to a whole point						−103

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	23,890	2343.8	− 2436	−92.2	× 89 / 415	−19.8
4	23,891	2387.0	− 2485	−98	× 109 / 415	−25.7
5	23,892	2401.9	− 2528	−126.1	× 119 / 415	−36.2
6	23,893	2416.5	− 2552	−135.5	× 98 / 415	−32
Sum, rounded to a whole point						−114

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	23,740	2367.5	− 2436	−68.5	× 99 / 405	−16.7
4	23,741	2386.3	− 2485	−98.7	× 104 / 405	−25.3
5	23,742	2391.6	− 2528	−136.4	× 104 / 405	−35
6	23,743	2402.0	− 2552	−150	× 98 / 405	−36.3
Sum, rounded to a whole point						−113

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	23,621	2347.7	− 2436	−88.3	× 99 / 409	−21.4
4	23,622	2406.8	− 2485	−78.2	× 105 / 409	−20.1
5	23,623	2401.6	− 2528	−126.4	× 117 / 409	−36.2
6	23,624	2402.6	− 2552	−149.4	× 88 / 409	−32.1
Sum, rounded to a whole point						−110

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −108, −104, −99, −96, −92, −103, −114, −113, −110 → −104.3
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: 3 · 2018→2019: 4 · 2019→2022: 11 · 2022→2023: 11 · 2023→2024: 1 · 2024→2025: 3 → average 5.3
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 5.3 × 2.66 = 14.1. Upper limit −90.2, lower limit −118.4.

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.