Loma Vista 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	46,087	2356.2	− 2432	−75.8	× 71 / 310	−17.4
4	46,090	2348.6	− 2473	−124.4	× 76 / 310	−30.5
5	46,091	2403.7	− 2502	−98.3	× 79 / 310	−25.1
6	46,094	2463.5	− 2531	−67.5	× 84 / 310	−18.3
Sum, rounded to a whole point						−91

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	42,789	2357.5	− 2432	−74.5	× 87 / 315	−20.6
4	42,791	2398.8	− 2473	−74.2	× 72 / 315	−17
5	42,793	2418.7	− 2502	−83.3	× 76 / 315	−20.1
6	42,796	2483.2	− 2531	−47.8	× 80 / 315	−12.1
Sum, rounded to a whole point						−70

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	43,865	2363.9	− 2432	−68.1	× 72 / 324	−15.1
4	43,866	2393.7	− 2473	−79.3	× 90 / 324	−22
5	43,868	2431.4	− 2502	−70.6	× 74 / 324	−16.1
6	43,870	2467.4	− 2531	−63.6	× 88 / 324	−17.3
Sum, rounded to a whole point						−71

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	43,881	2387.1	− 2432	−44.9	× 70 / 326	−9.6
4	43,884	2413.2	− 2473	−59.8	× 80 / 326	−14.7
5	43,885	2444.4	− 2502	−57.6	× 100 / 326	−17.7
6	43,888	2510.2	− 2531	−20.8	× 76 / 326	−4.8
Sum, rounded to a whole point						−47

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	44,008	2372.6	− 2432	−59.4	× 86 / 329	−15.5
4	44,009	2408.1	− 2473	−64.9	× 71 / 329	−14
5	44,010	2433.7	− 2502	−68.3	× 90 / 329	−18.7
6	44,011	2495.5	− 2531	−35.5	× 82 / 329	−8.8
Sum, rounded to a whole point						−57

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	43,758	2339.7	− 2432	−92.3	× 73 / 283	−23.8
4	43,759	2381.1	− 2473	−91.9	× 63 / 283	−20.5
5	43,760	2439.7	− 2502	−62.3	× 70 / 283	−15.4
6	43,761	2462.6	− 2531	−68.4	× 77 / 283	−18.6
Sum, rounded to a whole point						−78

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	43,750	2319.2	− 2432	−112.8	× 61 / 269	−25.6
4	43,751	2354.2	− 2473	−118.8	× 74 / 269	−32.7
5	43,752	2403.6	− 2502	−98.4	× 65 / 269	−23.8
6	43,753	2446.1	− 2531	−84.9	× 69 / 269	−21.8
Sum, rounded to a whole point						−104

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	43,572	2342.5	− 2432	−89.5	× 52 / 242	−19.2
4	43,573	2354.2	− 2473	−118.8	× 60 / 242	−29.5
5	43,574	2392.1	− 2502	−109.9	× 68 / 242	−30.9
6	43,575	2425.0	− 2531	−106	× 62 / 242	−27.2
Sum, rounded to a whole point						−107

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	43,321	2320.3	− 2432	−111.7	× 61 / 243	−28
4	43,322	2355.1	− 2473	−117.9	× 54 / 243	−26.2
5	43,323	2412.1	− 2502	−89.9	× 57 / 243	−21.1
6	43,324	2438.2	− 2531	−92.8	× 71 / 243	−27.1
Sum, rounded to a whole point						−102

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −91, −70, −71, −47, −57, −78, −104, −107, −102 → −80.8
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 21 · 2016→2017: 1 · 2017→2018: 24 · 2018→2019: 10 · 2019→2022: 21 · 2022→2023: 26 · 2023→2024: 3 · 2024→2025: 5 → average 13.9
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 13.9 × 2.66 = 37. Upper limit −43.8, lower limit −117.8.

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.