Los Molinos Unified: science

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.

2019 from cast_ca2019_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	26,847	201.6	− 214	−12.4	× 43 / 101	−5.3
8	26,848	398.6	− 415	−16.4	× 30 / 101	−4.9
11	26,849	615.0	− 615	0	× 12 / 101	0
12	26,850	601.6	− 615	−13.4	× 16 / 101	−2.1
Sum, rounded to a whole point						−12

2021 from cast_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	28,491	203.0	− 214	−11	× 36 / 166	−2.4
8	28,492	396.3	− 415	−18.7	× 33 / 166	−3.7
11	28,493	594.9	− 615	−20.1	× 49 / 166	−5.9
12	28,494	592.4	− 615	−22.6	× 48 / 166	−6.5
Sum, rounded to a whole point						−19

2022 from cast_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	33,242	195.4	− 214	−18.6	× 32 / 113	−5.3
8	33,243	394.1	− 415	−20.9	× 42 / 113	−7.8
11	33,244	597.7	− 615	−17.3	× 39 / 113	−6
Sum, rounded to a whole point						−19

2023 from cast_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	33,173	205.0	− 214	−9	× 31 / 124	−2.3
8	33,174	399.6	− 415	−15.4	× 38 / 124	−4.7
11	33,175	598.2	− 615	−16.8	× 55 / 124	−7.5
Sum, rounded to a whole point						−14

2024 from cast_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	33,232	198.7	− 214	−15.3	× 44 / 128	−5.3
8	33,233	401.9	− 415	−13.1	× 35 / 128	−3.6
11	33,234	596.1	− 615	−18.9	× 49 / 128	−7.2
Sum, rounded to a whole point						−16

2025 from cast_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	33,239	194.2	− 214	−19.8	× 42 / 125	−6.7
8	33,240	397.1	− 415	−17.9	× 39 / 125	−5.6
11	33,241	603.8	− 615	−11.2	× 44 / 125	−3.9
Sum, rounded to a whole point						−16

2026 from cast_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	33,019	200.4	− 214	−13.6	× 51 / 135	−5.1
8	33,020	402.3	− 415	−12.7	× 43 / 135	−4
11	33,021	608.6	− 615	−6.4	× 41 / 135	−1.9
Sum, rounded to a whole point						−11

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −12, −19, −19, −14, −16, −16, −11 → −15.3
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2019→2021: 7 · 2021→2022: 0 · 2022→2023: 5 · 2023→2024: 2 · 2024→2025: 0 · 2025→2026: 5 → average 3.2
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 3.2 × 2.66 = 8.5. Upper limit −6.8, lower limit −23.8.

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 — 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.

Schools in Los Molinos Unified

K–8 schools

High schools

Los Molinos High