Mojave Elementary: english

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	17,609	2305.4	− 2432	−126.6	× 60 / 234	−32.5
4	17,611	2363.7	− 2473	−109.3	× 72 / 234	−33.6
5	17,613	2386.0	− 2502	−116	× 57 / 234	−28.3
6	17,615	2415.6	− 2531	−115.4	× 45 / 234	−22.2
Sum, rounded to a whole point						−117

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,619	2351.2	− 2432	−80.8	× 52 / 224	−18.8
4	16,622	2343.7	− 2473	−129.3	× 60 / 224	−34.6
5	16,623	2391.4	− 2502	−110.6	× 60 / 224	−29.6
6	16,625	2412.8	− 2531	−118.2	× 52 / 224	−27.4
Sum, rounded to a whole point						−110

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,942	2362.3	− 2432	−69.7	× 64 / 242	−18.4
4	16,943	2379.3	− 2473	−93.7	× 56 / 242	−21.7
5	16,945	2378.2	− 2502	−123.8	× 53 / 242	−27.1
6	16,947	2420.4	− 2531	−110.6	× 69 / 242	−31.5
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	16,962	2356.0	− 2432	−76	× 70 / 182	−29.2
4	16,964	2381.4	− 2473	−91.6	× 64 / 182	−32.2
5	16,966	2411.4	− 2502	−90.6	× 48 / 182	−23.9
Sum, rounded to a whole point						−85

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	17,108	2345.8	− 2432	−86.2	× 60 / 184	−28.1
4	17,109	2393.6	− 2473	−79.4	× 64 / 184	−27.6
5	17,110	2409.8	− 2502	−92.2	× 60 / 184	−30.1
Sum, rounded to a whole point						−86

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	17,152	2325.6	− 2432	−106.4	× 58 / 184	−33.5
4	17,153	2351.9	− 2473	−121.1	× 66 / 184	−43.4
5	17,154	2404.1	− 2502	−97.9	× 60 / 184	−31.9
Sum, rounded to a whole point						−109

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	17,090	2300.7	− 2432	−131.3	× 75 / 186	−52.9
4	17,091	2345.3	− 2473	−127.7	× 59 / 186	−40.5
5	17,092	2377.3	− 2502	−124.7	× 52 / 186	−34.9
Sum, rounded to a whole point						−128

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	17,047	2317.6	− 2432	−114.4	× 71 / 204	−39.8
4	17,048	2340.8	− 2473	−132.2	× 79 / 204	−51.2
5	17,049	2375.7	− 2502	−126.3	× 54 / 204	−33.4
Sum, rounded to a whole point						−124

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	17,034	2314.6	− 2432	−117.4	× 60 / 207	−34
4	17,035	2355.6	− 2473	−117.4	× 70 / 207	−39.7
5	17,036	2407.4	− 2502	−94.6	× 77 / 207	−35.2
Sum, rounded to a whole point						−109

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −117, −110, −99, −85, −86, −109, −128, −124, −109 → −107.4
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: 11 · 2017→2018: 14 · 2018→2019: 1 · 2019→2022: 23 · 2022→2023: 19 · 2023→2024: 4 · 2024→2025: 15 → average 11.8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 11.8 × 2.66 = 31.4. Upper limit −76, lower limit −138.8.

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.