Westside 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	58,835	2338.4	− 2432	−93.6	× 73 / 333	−20.5
4	58,837	2386.0	− 2473	−87	× 78 / 333	−20.4
5	58,839	2408.6	− 2502	−93.4	× 77 / 333	−21.6
6	58,841	2457.7	− 2531	−73.3	× 105 / 333	−23.1
Sum, rounded to a whole point						−86

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	54,592	2345.0	− 2432	−87	× 86 / 317	−23.6
4	54,594	2392.4	− 2473	−80.6	× 75 / 317	−19.1
5	54,596	2435.3	− 2502	−66.7	× 79 / 317	−16.6
6	54,598	2461.7	− 2531	−69.3	× 77 / 317	−16.8
Sum, rounded to a whole point						−76

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	56,183	2342.4	− 2432	−89.6	× 72 / 313	−20.6
4	56,184	2393.5	− 2473	−79.5	× 84 / 313	−21.3
5	56,186	2431.3	− 2502	−70.7	× 76 / 313	−17.2
6	56,189	2476.3	− 2531	−54.7	× 81 / 313	−14.2
Sum, rounded to a whole point						−73

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	56,281	2392.2	− 2432	−39.8	× 58 / 281	−8.2
4	56,283	2399.9	− 2473	−73.1	× 65 / 281	−16.9
5	56,285	2435.5	− 2502	−66.5	× 82 / 281	−19.4
6	56,287	2489.5	− 2531	−41.5	× 76 / 281	−11.2
Sum, rounded to a whole point						−56

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	56,536	2398.9	− 2432	−33.1	× 66 / 273	−8
4	56,537	2386.4	− 2473	−86.6	× 53 / 273	−16.8
5	56,538	2406.8	− 2502	−95.2	× 69 / 273	−24.1
6	56,539	2495.5	− 2531	−35.5	× 85 / 273	−11.1
Sum, rounded to a whole point						−60

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	55,279	2337.8	− 2432	−94.2	× 36 / 155	−21.9
4	55,280	2388.4	− 2473	−84.6	× 39 / 155	−21.3
5	55,281	2427.3	− 2502	−74.7	× 45 / 155	−21.7
6	55,282	2461.9	− 2531	−69.1	× 35 / 155	−15.6
Sum, rounded to a whole point						−80

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	56,614	2360.1	− 2432	−71.9	× 60 / 221	−19.5
4	56,615	2395.7	− 2473	−77.3	× 41 / 221	−14.3
5	56,616	2435.2	− 2502	−66.8	× 53 / 221	−16
6	56,617	2481.4	− 2531	−49.6	× 67 / 221	−15
Sum, rounded to a whole point						−65

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	56,575	2347.9	− 2432	−84.1	× 43 / 200	−18.1
4	56,576	2403.6	− 2473	−69.4	× 58 / 200	−20.1
5	56,577	2415.6	− 2502	−86.4	× 44 / 200	−19
6	56,578	2463.5	− 2531	−67.5	× 55 / 200	−18.6
Sum, rounded to a whole point						−76

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	56,463	2355.6	− 2432	−76.4	× 46 / 197	−17.8
4	56,464	2397.8	− 2473	−75.2	× 53 / 197	−20.2
5	56,465	2448.1	− 2502	−53.9	× 55 / 197	−15
6	56,466	2514.1	− 2531	−16.9	× 43 / 197	−3.7
Sum, rounded to a whole point						−57

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	56,219	2367.3	− 2432	−64.7	× 43 / 191	−14.6
4	56,220	2412.7	− 2473	−60.3	× 46 / 191	−14.5
5	56,221	2405.9	− 2502	−96.1	× 49 / 191	−24.7
6	56,222	2536.7	− 2531	5.7	× 53 / 191	1.6
Sum, rounded to a whole point						−52

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −86, −76, −73, −56, −60, −80, −65, −76, −57, −52 → −68.1
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 10 · 2016→2017: 3 · 2017→2018: 17 · 2018→2019: 4 · 2019→2021: 20 · 2021→2022: 15 · 2022→2023: 11 · 2023→2024: 19 · 2024→2025: 5 → average 11.6
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 11.6 × 2.66 = 30.9. Upper limit −37.2, lower limit −99.

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.