Linda 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	52,454	2360.3	− 2432	−71.7	× 55 / 227	−17.4
4	52,455	2426.8	− 2473	−46.2	× 50 / 227	−10.2
5	52,458	2469.2	− 2502	−32.8	× 63 / 227	−9.1
6	52,459	2520.5	− 2531	−10.5	× 59 / 227	−2.7
Sum, rounded to a whole point						−39

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	48,729	2360.5	− 2432	−71.5	× 59 / 219	−19.3
4	48,732	2447.3	− 2473	−25.7	× 50 / 219	−5.9
5	48,734	2477.4	− 2502	−24.6	× 49 / 219	−5.5
6	48,736	2521.5	− 2531	−9.5	× 61 / 219	−2.6
Sum, rounded to a whole point						−33

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,065	2377.3	− 2432	−54.7	× 46 / 202	−12.5
4	50,067	2440.8	− 2473	−32.2	× 54 / 202	−8.6
5	50,069	2463.4	− 2502	−38.6	× 49 / 202	−9.4
6	50,072	2527.0	− 2531	−4	× 53 / 202	−1
Sum, rounded to a whole point						−31

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,094	2370.9	− 2432	−61.1	× 41 / 187	−13.4
4	50,096	2454.7	− 2473	−18.3	× 43 / 187	−4.2
5	50,098	2413.4	− 2502	−88.6	× 51 / 187	−24.2
6	50,100	2530.8	− 2531	−0.2	× 52 / 187	−0.1
Sum, rounded to a whole point						−42

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,282	2396.3	− 2432	−35.7	× 44 / 183	−8.6
4	50,283	2419.8	− 2473	−53.2	× 41 / 183	−11.9
5	50,284	2491.7	− 2502	−10.3	× 45 / 183	−2.5
6	50,285	2511.4	− 2531	−19.6	× 53 / 183	−5.7
Sum, rounded to a whole point						−29

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,194	2378.3	− 2432	−53.7	× 40 / 177	−12.1
4	50,195	2448.2	− 2473	−24.8	× 42 / 177	−5.9
5	50,196	2455.6	− 2502	−46.4	× 50 / 177	−13.1
6	50,197	2507.6	− 2531	−23.4	× 45 / 177	−5.9
Sum, rounded to a whole point						−37

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,154	2391.0	− 2432	−41	× 46 / 177	−10.7
4	50,155	2439.2	− 2473	−33.8	× 40 / 177	−7.6
5	50,156	2480.9	− 2502	−21.1	× 43 / 177	−5.1
6	50,157	2505.2	− 2531	−25.8	× 48 / 177	−7
Sum, rounded to a whole point						−30

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,009	2374.9	− 2432	−57.1	× 33 / 158	−11.9
4	50,010	2412.3	− 2473	−60.7	× 44 / 158	−16.9
5	50,011	2487.2	− 2502	−14.8	× 38 / 158	−3.6
6	50,012	2561.9	− 2531	30.9	× 43 / 158	8.4
Sum, rounded to a whole point						−24

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	49,765	2379.9	− 2432	−52.1	× 40 / 156	−13.4
4	49,766	2462.0	− 2473	−11	× 37 / 156	−2.6
5	49,767	2496.4	− 2502	−5.6	× 43 / 156	−1.5
6	49,768	2538.0	− 2531	7	× 36 / 156	1.6
Sum, rounded to a whole point						−16

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −39, −33, −31, −42, −29, −37, −30, −24, −16 → −31.2
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 6 · 2016→2017: 2 · 2017→2018: 11 · 2018→2019: 13 · 2019→2022: 8 · 2022→2023: 7 · 2023→2024: 6 · 2024→2025: 8 → average 7.6
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 7.6 × 2.66 = 20.2. Upper limit −11, lower limit −51.4.

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.