California School For The Deaf-Riverside: 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	55,155	2339.8	− 2436	−96.2	× 12 / 111	−10.4
4	55,157	2387.0	− 2485	−98	× 16 / 111	−14.1
5	55,159	2392.4	− 2528	−135.6	× 14 / 111	−17.1
6	55,161	2372.5	− 2552	−179.5	× 23 / 111	−37.2
8	55,165	2388.8	− 2586	−197.2	× 18 / 111	−32
11	55,167	2438.0	− 2628	−190	× 28 / 111	−47.9
Sum, rounded to a whole point						−159

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	52,702	2343.7	− 2436	−92.3	× 15 / 127	−10.9
4	52,705	2406.7	− 2485	−78.3	× 14 / 127	−8.6
5	52,706	2399.4	− 2528	−128.6	× 11 / 127	−11.1
6	52,708	2393.9	− 2552	−158.1	× 16 / 127	−19.9
7	52,710	2429.1	− 2567	−137.9	× 14 / 127	−15.2
8	52,713	2432.2	− 2586	−153.8	× 20 / 127	−24.2
11	52,714	2446.0	− 2628	−182	× 37 / 127	−53
Sum, rounded to a whole point						−143

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	52,790	2335.2	− 2436	−100.8	× 14 / 96	−14.7
4	52,792	2366.2	− 2485	−118.8	× 17 / 96	−21
5	52,794	2373.8	− 2528	−154.2	× 13 / 96	−20.9
7	52,798	2428.9	− 2567	−138.1	× 14 / 96	−20.1
8	52,800	2429.0	− 2586	−157	× 14 / 96	−22.9
11	52,802	2433.2	− 2628	−194.8	× 24 / 96	−48.7
Sum, rounded to a whole point						−148

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
4	53,033	2364.1	− 2485	−120.9	× 16 / 46	−42.1
5	53,034	2394.5	− 2528	−133.5	× 18 / 46	−52.2
8	53,037	2423.2	− 2586	−162.8	× 12 / 46	−42.5
Sum, rounded to a whole point						−137

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	53,040	2320.9	− 2436	−115.1	× 15 / 83	−20.8
4	53,041	2341.2	− 2485	−143.8	× 19 / 83	−32.9
5	53,042	2393.6	− 2528	−134.4	× 17 / 83	−27.5
7	53,044	2381.0	− 2567	−186	× 11 / 83	−24.7
11	53,046	2418.3	− 2628	−209.7	× 21 / 83	−53.1
Sum, rounded to a whole point						−159

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
4	53,004	2336.5	− 2485	−148.5	× 17 / 67	−37.7
5	53,005	2370.8	− 2528	−157.2	× 20 / 67	−46.9
6	53,006	2396.4	− 2552	−155.6	× 17 / 67	−39.5
8	53,008	2385.4	− 2586	−200.6	× 13 / 67	−38.9
Sum, rounded to a whole point						−163

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	52,849	2311.1	− 2436	−124.9	× 21 / 117	−22.4
4	52,850	2321.7	− 2485	−163.3	× 15 / 117	−20.9
5	52,851	2364.0	− 2528	−164	× 16 / 117	−22.4
6	52,852	2354.2	− 2552	−197.8	× 19 / 117	−32.1
7	52,853	2388.9	− 2567	−178.1	× 19 / 117	−28.9
8	52,854	2362.0	− 2586	−224	× 12 / 117	−23
11	52,855	2441.0	− 2628	−187	× 15 / 117	−24
Sum, rounded to a whole point						−174

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	52,589	2310.0	− 2436	−126	× 18 / 128	−17.7
4	52,590	2322.8	− 2485	−162.2	× 22 / 128	−27.9
5	52,591	2371.3	− 2528	−156.7	× 11 / 128	−13.5
6	52,592	2395.8	− 2552	−156.2	× 18 / 128	−22
7	52,593	2383.3	− 2567	−183.7	× 20 / 128	−28.7
8	52,594	2388.9	− 2586	−197.1	× 20 / 128	−30.8
11	52,595	2448.2	− 2628	−179.8	× 19 / 128	−26.7
Sum, rounded to a whole point						−167

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −159, −143, −148, −137, −159, −163, −174, −167 → −156.3
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2017: 16 · 2017→2018: 5 · 2018→2019: 11 · 2019→2022: 22 · 2022→2023: 4 · 2023→2024: 11 · 2024→2025: 7 → average 10.9
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 10.9 × 2.66 = 29. Upper limit −127.3, lower limit −185.3.

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 California School For The Deaf-Riverside

California School For The Deaf-Riverside