Lucerne Valley Unified: english

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	69,460	2372.6	− 2432	−59.4	× 50 / 397	−7.5
4	69,462	2399.4	− 2473	−73.6	× 61 / 397	−11.3
5	69,464	2455.8	− 2502	−46.2	× 47 / 397	−5.5
6	69,466	2465.0	− 2531	−66	× 63 / 397	−10.5
7	69,468	2483.7	− 2552	−68.3	× 58 / 397	−10
8	69,470	2526.5	− 2567	−40.5	× 56 / 397	−5.7
11	69,472	2555.5	− 2583	−27.5	× 62 / 397	−4.3
Sum, rounded to a whole point						−55

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	64,381	2376.0	− 2432	−56	× 50 / 371	−7.5
4	64,383	2441.0	− 2473	−32	× 51 / 371	−4.4
5	64,385	2430.7	− 2502	−71.3	× 64 / 371	−12.3
6	64,388	2477.1	− 2531	−53.9	× 42 / 371	−6.1
7	64,390	2482.4	− 2552	−69.6	× 55 / 371	−10.3
8	64,392	2513.7	− 2567	−53.3	× 57 / 371	−8.2
11	64,393	2565.0	− 2583	−18	× 52 / 371	−2.5
Sum, rounded to a whole point						−51

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	66,189	2378.5	− 2432	−53.5	× 53 / 371	−7.6
4	66,191	2443.0	− 2473	−30	× 57 / 371	−4.6
5	66,194	2444.7	− 2502	−57.3	× 57 / 371	−8.8
6	66,196	2457.0	− 2531	−74	× 56 / 371	−11.2
7	66,198	2527.2	− 2552	−24.8	× 45 / 371	−3
8	66,200	2488.7	− 2567	−78.3	× 56 / 371	−11.8
11	66,202	2550.2	− 2583	−32.8	× 47 / 371	−4.2
Sum, rounded to a whole point						−51

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	66,260	2408.9	− 2432	−23.1	× 50 / 394	−2.9
4	66,261	2408.9	− 2473	−64.1	× 63 / 394	−10.2
5	66,263	2462.5	− 2502	−39.5	× 70 / 394	−7
6	66,265	2456.9	− 2531	−74.1	× 67 / 394	−12.6
7	66,268	2502.1	− 2552	−49.9	× 60 / 394	−7.6
8	66,269	2512.6	− 2567	−54.4	× 46 / 394	−6.4
11	66,272	2576.8	− 2583	−6.2	× 38 / 394	−0.6
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	66,644	2408.7	− 2432	−23.3	× 53 / 404	−3.1
4	66,645	2457.7	− 2473	−15.3	× 53 / 404	−2
5	66,646	2453.8	− 2502	−48.2	× 56 / 404	−6.7
6	66,647	2472.1	− 2531	−58.9	× 67 / 404	−9.8
7	66,648	2514.8	− 2552	−37.2	× 58 / 404	−5.3
8	66,649	2489.7	− 2567	−77.3	× 63 / 404	−12.1
11	66,650	2566.5	− 2583	−16.5	× 54 / 404	−2.2
Sum, rounded to a whole point						−41

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	66,722	2352.9	− 2432	−79.1	× 78 / 489	−12.6
4	66,723	2413.3	− 2473	−59.7	× 82 / 489	−10
5	66,724	2448.3	− 2502	−53.7	× 76 / 489	−8.3
6	66,725	2488.4	− 2531	−42.6	× 68 / 489	−5.9
7	66,726	2502.3	− 2552	−49.7	× 68 / 489	−6.9
8	66,727	2489.7	− 2567	−77.3	× 74 / 489	−11.7
11	66,728	2566.8	− 2583	−16.2	× 43 / 489	−1.4
Sum, rounded to a whole point						−57

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	66,722	2357.2	− 2432	−74.8	× 76 / 553	−10.3
4	66,723	2396.7	− 2473	−76.3	× 91 / 553	−12.6
5	66,724	2450.2	− 2502	−51.8	× 90 / 553	−8.4
6	66,725	2449.2	− 2531	−81.8	× 83 / 553	−12.3
7	66,726	2497.7	− 2552	−54.3	× 74 / 553	−7.3
8	66,727	2467.9	− 2567	−99.1	× 73 / 553	−13.1
11	66,728	2521.2	− 2583	−61.8	× 66 / 553	−7.4
Sum, rounded to a whole point						−71

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	66,708	2340.4	− 2432	−91.6	× 94 / 620	−13.9
4	66,709	2390.6	− 2473	−82.4	× 81 / 620	−10.8
5	66,710	2460.2	− 2502	−41.8	× 91 / 620	−6.1
6	66,711	2449.5	− 2531	−81.5	× 99 / 620	−13
7	66,712	2441.4	− 2552	−110.6	× 89 / 620	−15.9
8	66,713	2458.3	− 2567	−108.7	× 87 / 620	−15.3
11	66,714	2522.0	− 2583	−61	× 79 / 620	−7.8
Sum, rounded to a whole point						−83

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	66,452	2364.7	− 2432	−67.3	× 101 / 642	−10.6
4	66,453	2404.4	− 2473	−68.6	× 93 / 642	−9.9
5	66,454	2460.9	− 2502	−41.1	× 80 / 642	−5.1
6	66,455	2476.8	− 2531	−54.2	× 102 / 642	−8.6
7	66,456	2477.9	− 2552	−74.1	× 98 / 642	−11.3
8	66,457	2466.4	− 2567	−100.6	× 89 / 642	−13.9
11	66,458	2564.7	− 2583	−18.3	× 79 / 642	−2.3
Sum, rounded to a whole point						−62

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	66,430	2366.0	− 2432	−66	× 93 / 634	−9.7
4	66,431	2405.0	− 2473	−68	× 104 / 634	−11.2
5	66,432	2434.9	− 2502	−67.1	× 92 / 634	−9.7
6	66,433	2505.7	− 2531	−25.3	× 78 / 634	−3.1
7	66,434	2516.5	− 2552	−35.5	× 99 / 634	−5.5
8	66,435	2499.4	− 2567	−67.6	× 95 / 634	−10.1
11	66,436	2548.5	− 2583	−34.5	× 73 / 634	−4
Sum, rounded to a whole point						−53

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −55, −51, −51, −47, −41, −57, −71, −83, −62, −53 → −57.1
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: 0 · 2017→2018: 4 · 2018→2019: 6 · 2019→2022: 16 · 2022→2023: 14 · 2023→2024: 12 · 2024→2025: 21 · 2025→2026: 9 → average 9.6
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 9.6 × 2.66 = 25.5. Upper limit −31.6, lower limit −82.6.

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.

Lucerne Valley Unified