Lost Hills Union Elementary: 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	17,380	2377.4	− 2436	−58.6	× 66 / 333	−11.6
4	17,381	2412.2	− 2485	−72.8	× 52 / 333	−11.4
5	17,384	2422.1	− 2528	−105.9	× 63 / 333	−20
6	17,386	2440.8	− 2552	−111.2	× 48 / 333	−16
7	17,388	2472.7	− 2567	−94.3	× 62 / 333	−17.6
8	17,389	2493.5	− 2586	−92.5	× 42 / 333	−11.7
Sum, rounded to a whole point						−88

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,397	2390.3	− 2436	−45.7	× 59 / 342	−7.9
4	16,398	2401.2	− 2485	−83.8	× 64 / 342	−15.7
5	16,400	2429.1	− 2528	−98.9	× 49 / 342	−14.2
6	16,403	2429.2	− 2552	−122.8	× 64 / 342	−23
7	16,405	2471.1	− 2567	−95.9	× 46 / 342	−12.9
8	16,407	2482.1	− 2586	−103.9	× 60 / 342	−18.2
Sum, rounded to a whole point						−92

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,706	2384.2	− 2436	−51.8	× 64 / 358	−9.3
4	16,708	2382.5	− 2485	−102.5	× 62 / 358	−17.8
5	16,709	2409.4	− 2528	−118.6	× 61 / 358	−20.2
6	16,711	2423.5	− 2552	−128.5	× 56 / 358	−20.1
7	16,714	2459.2	− 2567	−107.8	× 65 / 358	−19.6
8	16,715	2446.8	− 2586	−139.2	× 50 / 358	−19.4
Sum, rounded to a whole point						−106

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,725	2387.6	− 2436	−48.4	× 66 / 378	−8.5
4	16,726	2398.7	− 2485	−86.3	× 62 / 378	−14.2
5	16,729	2422.3	− 2528	−105.7	× 67 / 378	−18.7
6	16,730	2407.7	− 2552	−144.3	× 62 / 378	−23.7
7	16,733	2464.3	− 2567	−102.7	× 58 / 378	−15.8
8	16,734	2455.6	− 2586	−130.4	× 63 / 378	−21.7
Sum, rounded to a whole point						−103

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,861	2386.8	− 2436	−49.2	× 34 / 309	−5.4
4	16,862	2426.6	− 2485	−58.4	× 47 / 309	−8.9
5	16,863	2446.6	− 2528	−81.4	× 66 / 309	−17.4
6	16,864	2416.9	− 2552	−135.1	× 44 / 309	−19.2
7	16,865	2448.9	− 2567	−118.1	× 61 / 309	−23.3
8	16,866	2465.6	− 2586	−120.4	× 57 / 309	−22.2
Sum, rounded to a whole point						−96

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,453	2363.3	− 2436	−72.7	× 24 / 192	−9.1
4	16,454	2399.4	− 2485	−85.6	× 30 / 192	−13.4
5	16,455	2466.1	− 2528	−61.9	× 25 / 192	−8.1
6	16,456	2437.7	− 2552	−114.3	× 37 / 192	−22
7	16,457	2445.6	− 2567	−121.4	× 37 / 192	−23.4
8	16,458	2477.1	− 2586	−108.9	× 39 / 192	−22.1
Sum, rounded to a whole point						−98

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,905	2397.2	− 2436	−38.8	× 28 / 164	−6.6
4	16,906	2427.9	− 2485	−57.1	× 24 / 164	−8.4
5	16,907	2525.5	− 2528	−2.5	× 27 / 164	−0.4
6	16,908	2475.0	− 2552	−77	× 24 / 164	−11.3
7	16,909	2500.3	− 2567	−66.7	× 32 / 164	−13
8	16,910	2480.6	− 2586	−105.4	× 29 / 164	−18.6
Sum, rounded to a whole point						−58

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,839	2397.5	− 2436	−38.5	× 28 / 166	−6.5
4	16,840	2419.6	− 2485	−65.4	× 28 / 166	−11
5	16,841	2518.7	− 2528	−9.3	× 26 / 166	−1.5
6	16,842	2483.4	− 2552	−68.6	× 29 / 166	−12
7	16,843	2510.7	− 2567	−56.3	× 23 / 166	−7.8
8	16,844	2518.2	− 2586	−67.8	× 32 / 166	−13.1
Sum, rounded to a whole point						−52

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,796	2432.4	− 2436	−3.6	× 30 / 168	−0.6
4	16,797	2425.1	− 2485	−59.9	× 29 / 168	−10.3
5	16,798	2455.5	− 2528	−72.5	× 31 / 168	−13.4
6	16,799	2472.3	− 2552	−79.7	× 26 / 168	−12.3
7	16,800	2491.6	− 2567	−75.4	× 27 / 168	−12.1
8	16,801	2503.6	− 2586	−82.4	× 25 / 168	−12.3
Sum, rounded to a whole point						−61

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,781	2421.4	− 2436	−14.6	× 31 / 180	−2.5
4	16,782	2456.1	− 2485	−28.9	× 34 / 180	−5.5
5	16,783	2472.4	− 2528	−55.6	× 28 / 180	−8.6
6	16,784	2486.8	− 2552	−65.2	× 32 / 180	−11.6
7	16,785	2502.1	− 2567	−64.9	× 29 / 180	−10.5
8	16,786	2517.5	− 2586	−68.5	× 26 / 180	−9.9
Sum, rounded to a whole point						−49

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,790	2401.4	− 2436	−34.6	× 29 / 191	−5.3
4	16,791	2455.8	− 2485	−29.2	× 33 / 191	−5
5	16,792	2515.8	− 2528	−12.2	× 33 / 191	−2.1
6	16,793	2485.9	− 2552	−66.1	× 30 / 191	−10.4
7	16,794	2494.1	− 2567	−72.9	× 33 / 191	−12.6
8	16,795	2510.7	− 2586	−75.3	× 33 / 191	−13
Sum, rounded to a whole point						−48

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −88, −92, −106, −103, −96, −98, −58, −52, −61, −49, −48 → −77.4
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 4 · 2016→2017: 14 · 2017→2018: 3 · 2018→2019: 7 · 2019→2021: 2 · 2021→2022: 40 · 2022→2023: 6 · 2023→2024: 9 · 2024→2025: 12 · 2025→2026: 1 → average 9.8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 9.8 × 2.66 = 26.1. Upper limit −51.3, lower limit −103.5.

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.

Lost Hills Union Elementary