Los Molinos Unified: 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	99,495	2408.0	− 2436	−28	× 36 / 293	−3.4
4	99,496	2425.6	− 2485	−59.4	× 39 / 293	−7.9
5	99,499	2487.9	− 2528	−40.1	× 52 / 293	−7.1
6	99,500	2486.0	− 2552	−66	× 35 / 293	−7.9
7	99,503	2536.6	− 2567	−30.4	× 53 / 293	−5.5
8	99,504	2580.8	− 2586	−5.2	× 37 / 293	−0.7
11	99,507	2521.3	− 2628	−106.7	× 41 / 293	−14.9
Sum, rounded to a whole point						−47

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	92,258	2409.6	− 2436	−26.4	× 38 / 288	−3.5
4	92,261	2425.1	− 2485	−59.9	× 37 / 288	−7.7
5	92,262	2493.8	− 2528	−34.2	× 37 / 288	−4.4
6	92,264	2470.5	− 2552	−81.5	× 51 / 288	−14.4
7	92,266	2529.6	− 2567	−37.4	× 39 / 288	−5.1
8	92,269	2568.6	− 2586	−17.4	× 49 / 288	−3
11	92,270	2533.1	− 2628	−94.9	× 37 / 288	−12.2
Sum, rounded to a whole point						−50

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	95,048	2378.8	− 2436	−57.2	× 42 / 287	−8.4
4	95,051	2412.5	− 2485	−72.5	× 38 / 287	−9.6
5	95,052	2449.4	− 2528	−78.6	× 44 / 287	−12.1
6	95,054	2473.1	− 2552	−78.9	× 32 / 287	−8.8
7	95,056	2528.9	− 2567	−38.1	× 51 / 287	−6.8
8	95,058	2553.4	− 2586	−32.6	× 35 / 287	−4
11	95,061	2538.0	− 2628	−90	× 45 / 287	−14.1
Sum, rounded to a whole point						−64

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	95,232	2411.0	− 2436	−25	× 37 / 282	−3.3
4	95,235	2413.2	− 2485	−71.8	× 43 / 282	−10.9
5	95,236	2479.6	− 2528	−48.4	× 40 / 282	−6.9
6	95,239	2470.6	− 2552	−81.4	× 47 / 282	−13.6
7	95,240	2523.5	− 2567	−43.5	× 30 / 282	−4.6
8	95,243	2556.6	− 2586	−29.4	× 47 / 282	−4.9
11	95,244	2581.6	− 2628	−46.4	× 38 / 282	−6.3
Sum, rounded to a whole point						−50

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	95,897	2420.5	− 2436	−15.5	× 41 / 284	−2.2
4	95,898	2456.5	− 2485	−28.5	× 33 / 284	−3.3
5	95,899	2486.6	− 2528	−41.4	× 41 / 284	−6
6	95,900	2498.9	− 2552	−53.1	× 37 / 284	−6.9
7	95,901	2549.9	− 2567	−17.1	× 43 / 284	−2.6
8	95,902	2553.7	− 2586	−32.3	× 30 / 284	−3.4
11	95,903	2541.9	− 2628	−86.1	× 59 / 284	−17.9
Sum, rounded to a whole point						−42

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,792	2380.1	− 2436	−55.9	× 36 / 263	−7.7
4	93,793	2444.7	− 2485	−40.3	× 35 / 263	−5.4
5	93,794	2472.9	− 2528	−55.1	× 36 / 263	−7.5
6	93,795	2503.6	− 2552	−48.4	× 35 / 263	−6.4
7	93,796	2504.9	− 2567	−62.1	× 39 / 263	−9.2
8	93,797	2540.5	− 2586	−45.5	× 33 / 263	−5.7
11	93,798	2513.9	− 2628	−114.1	× 49 / 263	−21.3
Sum, rounded to a whole point						−63

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	96,053	2384.4	− 2436	−51.6	× 33 / 253	−6.7
4	96,054	2465.7	− 2485	−19.3	× 35 / 253	−2.7
5	96,055	2468.8	− 2528	−59.2	× 32 / 253	−7.5
6	96,056	2466.5	− 2552	−85.5	× 32 / 253	−10.8
7	96,057	2497.6	− 2567	−69.4	× 37 / 253	−10.1
8	96,058	2460.4	− 2586	−125.6	× 42 / 253	−20.9
11	96,059	2515.2	− 2628	−112.8	× 42 / 253	−18.7
Sum, rounded to a whole point						−77

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	95,922	2370.5	− 2436	−65.5	× 40 / 257	−10.2
4	95,923	2483.4	− 2485	−1.6	× 32 / 257	−0.2
5	95,924	2493.4	− 2528	−34.6	× 31 / 257	−4.2
6	95,925	2508.2	− 2552	−43.8	× 31 / 257	−5.3
7	95,926	2555.2	− 2567	−11.8	× 30 / 257	−1.4
8	95,927	2541.8	− 2586	−44.2	× 38 / 257	−6.5
11	95,928	2541.9	− 2628	−86.1	× 55 / 257	−18.4
Sum, rounded to a whole point						−46

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	95,798	2397.2	− 2436	−38.8	× 41 / 285	−5.6
4	95,799	2435.0	− 2485	−50	× 43 / 285	−7.5
5	95,800	2469.6	− 2528	−58.4	× 43 / 285	−8.8
6	95,801	2507.8	− 2552	−44.2	× 40 / 285	−6.2
7	95,802	2526.4	− 2567	−40.6	× 34 / 285	−4.8
8	95,803	2542.7	− 2586	−43.3	× 35 / 285	−5.3
11	95,804	2542.2	− 2628	−85.8	× 49 / 285	−14.8
Sum, rounded to a whole point						−53

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	95,532	2372.9	− 2436	−63.1	× 29 / 281	−6.5
4	95,533	2437.2	− 2485	−47.8	× 47 / 281	−8
5	95,534	2463.9	− 2528	−64.1	× 42 / 281	−9.6
6	95,535	2495.5	− 2552	−56.5	× 41 / 281	−8.2
7	95,536	2519.0	− 2567	−48	× 39 / 281	−6.7
8	95,537	2546.4	− 2586	−39.6	× 39 / 281	−5.5
11	95,538	2582.2	− 2628	−45.8	× 44 / 281	−7.2
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. −47, −50, −64, −50, −42, −63, −77, −46, −53, −52 → −54.4
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 3 · 2016→2017: 14 · 2017→2018: 14 · 2018→2019: 8 · 2019→2021: 21 · 2021→2022: 14 · 2022→2023: 31 · 2023→2024: 7 · 2024→2025: 1 → average 12.6
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 12.6 × 2.66 = 33.5. Upper limit −20.9, lower limit −87.9.

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.