Los Nietos: math · Schoolio

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	34,247	2381.4	− 2436	−54.6	× 207 / 1160	−9.7
4	34,250	2430.0	− 2485	−55	× 187 / 1160	−8.9
5	34,251	2448.7	− 2528	−79.3	× 177 / 1160	−12.1
6	34,254	2455.6	− 2552	−96.4	× 194 / 1160	−16.1
7	34,255	2478.7	− 2567	−88.3	× 195 / 1160	−14.8
8	34,258	2508.0	− 2586	−78	× 200 / 1160	−13.4
Sum, rounded to a whole point						−75

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	32,029	2401.4	− 2436	−34.6	× 194 / 1121	−6
4	32,032	2432.0	− 2485	−53	× 209 / 1121	−9.9
5	32,034	2466.0	− 2528	−62	× 188 / 1121	−10.4
6	32,035	2479.9	− 2552	−72.1	× 165 / 1121	−10.6
7	32,038	2481.9	− 2567	−85.1	× 181 / 1121	−13.7
8	32,039	2513.9	− 2586	−72.1	× 184 / 1121	−11.8
Sum, rounded to a whole point						−62

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	32,554	2407.4	− 2436	−28.6	× 177 / 1096	−4.6
4	32,555	2445.2	− 2485	−39.8	× 192 / 1096	−7
5	32,558	2450.5	− 2528	−77.5	× 214 / 1096	−15.1
6	32,560	2508.2	− 2552	−43.8	× 184 / 1096	−7.4
7	32,562	2492.9	− 2567	−74.1	× 154 / 1096	−10.4
8	32,564	2521.6	− 2586	−64.4	× 175 / 1096	−10.3
Sum, rounded to a whole point						−55

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	32,572	2412.8	− 2436	−23.2	× 163 / 1083	−3.5
4	32,574	2460.4	− 2485	−24.6	× 178 / 1083	−4
5	32,576	2477.6	− 2528	−50.4	× 189 / 1083	−8.8
6	32,578	2494.5	− 2552	−57.5	× 216 / 1083	−11.5
7	32,580	2525.2	− 2567	−41.8	× 184 / 1083	−7.1
8	32,582	2536.3	− 2586	−49.7	× 153 / 1083	−7
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	32,758	2428.3	− 2436	−7.7	× 152 / 1025	−1.1
4	32,759	2471.1	− 2485	−13.9	× 154 / 1025	−2.1
5	32,760	2488.7	− 2528	−39.3	× 179 / 1025	−6.9
6	32,761	2507.4	− 2552	−44.6	× 181 / 1025	−7.9
7	32,762	2499.8	− 2567	−67.2	× 191 / 1025	−12.5
8	32,763	2567.2	− 2586	−18.8	× 168 / 1025	−3.1
Sum, rounded to a whole point						−34

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	31,969	2395.5	− 2436	−40.5	× 142 / 895	−6.4
4	31,970	2413.8	− 2485	−71.2	× 146 / 895	−11.6
5	31,971	2447.2	− 2528	−80.8	× 152 / 895	−13.7
6	31,972	2484.1	− 2552	−67.9	× 142 / 895	−10.8
7	31,973	2500.5	− 2567	−66.5	× 155 / 895	−11.5
8	31,974	2521.6	− 2586	−64.4	× 158 / 895	−11.4
Sum, rounded to a whole point						−65

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	32,791	2411.9	− 2436	−24.1	× 134 / 851	−3.8
4	32,792	2464.1	− 2485	−20.9	× 143 / 851	−3.5
5	32,793	2468.5	− 2528	−59.5	× 146 / 851	−10.2
6	32,794	2501.2	− 2552	−50.8	× 152 / 851	−9.1
7	32,795	2492.1	− 2567	−74.9	× 126 / 851	−11.1
8	32,796	2502.3	− 2586	−83.7	× 150 / 851	−14.8
Sum, rounded to a whole point						−52

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	32,846	2416.2	− 2436	−19.8	× 149 / 810	−3.6
4	32,847	2463.6	− 2485	−21.4	× 134 / 810	−3.5
5	32,848	2496.4	− 2528	−31.6	× 134 / 810	−5.2
6	32,849	2499.3	− 2552	−52.7	× 147 / 810	−9.6
7	32,850	2498.7	− 2567	−68.3	× 127 / 810	−10.7
8	32,851	2531.5	− 2586	−54.5	× 119 / 810	−8
Sum, rounded to a whole point						−41

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	32,714	2421.9	− 2436	−14.1	× 126 / 788	−2.3
4	32,715	2467.1	− 2485	−17.9	× 144 / 788	−3.3
5	32,716	2484.1	− 2528	−43.9	× 135 / 788	−7.5
6	32,717	2529.1	− 2552	−22.9	× 129 / 788	−3.7
7	32,718	2505.9	− 2567	−61.1	× 124 / 788	−9.6
8	32,719	2525.0	− 2586	−61	× 130 / 788	−10.1
Sum, rounded to a whole point						−36

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	32,573	2402.4	− 2436	−33.6	× 117 / 794	−5
4	32,574	2452.6	− 2485	−32.4	× 133 / 794	−5.4
5	32,575	2483.3	− 2528	−44.7	× 143 / 794	−8.1
6	32,576	2507.8	− 2552	−44.2	× 138 / 794	−7.7
7	32,577	2524.0	− 2567	−43	× 133 / 794	−7.2
8	32,578	2550.1	− 2586	−35.9	× 130 / 794	−5.9
Sum, rounded to a whole point						−39

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	32,573	2404.5	− 2436	−31.5	× 119 / 758	−4.9
4	32,574	2445.5	− 2485	−39.5	× 115 / 758	−6
5	32,575	2487.8	− 2528	−40.2	× 131 / 758	−6.9
6	32,576	2507.0	− 2552	−45	× 131 / 758	−7.8
7	32,577	2514.5	− 2567	−52.5	× 126 / 758	−8.7
8	32,578	2557.4	− 2586	−28.6	× 136 / 758	−5.1
Sum, rounded to a whole point						−40

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −75, −62, −55, −42, −34, −65, −52, −41, −36, −39, −40 → −49.2
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 13 · 2016→2017: 7 · 2017→2018: 13 · 2018→2019: 8 · 2019→2021: 31 · 2021→2022: 13 · 2022→2023: 11 · 2023→2024: 5 · 2024→2025: 3 · 2025→2026: 1 → average 10.5
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 10.5 × 2.66 = 27.9. Upper limit −21.3, lower limit −77.1.

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 Nietos

Elementary schools

Middle schools

Los Nietos Middle