Mariposa County 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	42,925	2402.2	− 2436	−33.8	× 133 / 824	−5.5
4	42,928	2428.8	− 2485	−56.2	× 123 / 824	−8.4
5	42,929	2473.4	− 2528	−54.6	× 109 / 824	−7.2
6	42,932	2505.8	− 2552	−46.2	× 109 / 824	−6.1
7	42,933	2534.2	− 2567	−32.8	× 123 / 824	−4.9
8	42,936	2562.6	− 2586	−23.4	× 132 / 824	−3.7
11	42,937	2586.9	− 2628	−41.1	× 95 / 824	−4.7
Sum, rounded to a whole point						−41

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	39,605	2403.2	− 2436	−32.8	× 110 / 891	−4
4	39,608	2431.6	− 2485	−53.4	× 139 / 891	−8.3
5	39,610	2466.4	− 2528	−61.6	× 134 / 891	−9.3
6	39,611	2504.8	− 2552	−47.2	× 116 / 891	−6.1
7	39,614	2531.9	− 2567	−35.1	× 120 / 891	−4.7
8	39,616	2542.8	− 2586	−43.2	× 147 / 891	−7.1
11	39,617	2564.4	− 2628	−63.6	× 125 / 891	−8.9
Sum, rounded to a whole point						−49

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	40,627	2415.6	− 2436	−20.4	× 123 / 837	−3
4	40,629	2446.9	− 2485	−38.1	× 106 / 837	−4.8
5	40,630	2467.7	− 2528	−60.3	× 135 / 837	−9.7
6	40,633	2502.0	− 2552	−50	× 129 / 837	−7.7
7	40,635	2550.8	− 2567	−16.2	× 118 / 837	−2.3
8	40,637	2542.3	− 2586	−43.7	× 123 / 837	−6.4
11	40,638	2565.0	− 2628	−63	× 103 / 837	−7.8
Sum, rounded to a whole point						−42

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	40,646	2415.2	− 2436	−20.8	× 135 / 898	−3.1
4	40,647	2447.3	− 2485	−37.7	× 125 / 898	−5.2
5	40,650	2485.5	− 2528	−42.5	× 112 / 898	−5.3
6	40,652	2508.9	− 2552	−43.1	× 135 / 898	−6.5
7	40,653	2536.9	− 2567	−30.1	× 126 / 898	−4.2
8	40,656	2572.3	− 2586	−13.7	× 117 / 898	−1.8
11	40,657	2574.7	− 2628	−53.3	× 148 / 898	−8.8
Sum, rounded to a whole point						−35

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	40,791	2433.0	− 2436	−3	× 116 / 877	−0.4
4	40,792	2464.6	− 2485	−20.4	× 127 / 877	−3
5	40,793	2479.5	− 2528	−48.5	× 135 / 877	−7.5
6	40,794	2529.2	− 2552	−22.8	× 114 / 877	−3
7	40,795	2525.0	− 2567	−42	× 133 / 877	−6.4
8	40,796	2535.9	− 2586	−50.1	× 127 / 877	−7.3
11	40,797	2579.0	− 2628	−49	× 125 / 877	−7
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	39,728	2400.1	− 2436	−35.9	× 115 / 779	−5.3
4	39,729	2434.8	− 2485	−50.2	× 118 / 779	−7.6
5	39,730	2446.3	− 2528	−81.7	× 113 / 779	−11.9
6	39,731	2457.8	− 2552	−94.2	× 114 / 779	−13.8
7	39,732	2507.7	− 2567	−59.3	× 132 / 779	−10
8	39,733	2532.1	− 2586	−53.9	× 110 / 779	−7.6
11	39,734	2595.1	− 2628	−32.9	× 77 / 779	−3.3
Sum, rounded to a whole point						−59

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	40,548	2411.0	− 2436	−25	× 105 / 834	−3.1
4	40,549	2440.1	− 2485	−44.9	× 114 / 834	−6.1
5	40,550	2459.2	− 2528	−68.8	× 123 / 834	−10.1
6	40,551	2480.4	− 2552	−71.6	× 110 / 834	−9.4
7	40,552	2510.3	− 2567	−56.7	× 117 / 834	−8
8	40,553	2516.7	− 2586	−69.3	× 148 / 834	−12.3
11	40,554	2496.5	− 2628	−131.5	× 117 / 834	−18.4
Sum, rounded to a whole point						−68

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	40,591	2403.9	− 2436	−32.1	× 121 / 832	−4.7
4	40,592	2440.9	− 2485	−44.1	× 122 / 832	−6.5
5	40,593	2451.5	− 2528	−76.5	× 120 / 832	−11
6	40,594	2452.7	− 2552	−99.3	× 128 / 832	−15.3
7	40,595	2503.9	− 2567	−63.1	× 118 / 832	−8.9
8	40,596	2505.2	− 2586	−80.8	× 113 / 832	−11
11	40,597	2524.6	− 2628	−103.4	× 110 / 832	−13.7
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	40,416	2408.1	− 2436	−27.9	× 122 / 856	−4
4	40,417	2445.5	− 2485	−39.5	× 121 / 856	−5.6
5	40,418	2437.8	− 2528	−90.2	× 128 / 856	−13.5
6	40,419	2488.5	− 2552	−63.5	× 120 / 856	−8.9
7	40,420	2502.0	− 2567	−65	× 129 / 856	−9.8
8	40,421	2518.2	− 2586	−67.8	× 126 / 856	−10
11	40,422	2507.3	− 2628	−120.7	× 110 / 856	−15.5
Sum, rounded to a whole point						−67

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	40,197	2383.7	− 2436	−52.3	× 112 / 858	−6.8
4	40,198	2426.7	− 2485	−58.3	× 122 / 858	−8.3
5	40,199	2442.1	− 2528	−85.9	× 118 / 858	−11.8
6	40,200	2469.6	− 2552	−82.4	× 113 / 858	−10.9
7	40,201	2530.0	− 2567	−37	× 120 / 858	−5.2
8	40,202	2511.6	− 2586	−74.4	× 127 / 858	−11
11	40,203	2547.9	− 2628	−80.1	× 146 / 858	−13.6
Sum, rounded to a whole point						−68

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	40,105	2378.1	− 2436	−57.9	× 123 / 835	−8.5
4	40,106	2432.6	− 2485	−52.4	× 111 / 835	−7
5	40,107	2422.2	− 2528	−105.8	× 130 / 835	−16.5
6	40,108	2456.7	− 2552	−95.3	× 116 / 835	−13.2
7	40,109	2488.9	− 2567	−78.1	× 118 / 835	−11
8	40,110	2509.0	− 2586	−77	× 123 / 835	−11.3
11	40,111	2508.1	− 2628	−119.9	× 114 / 835	−16.4
Sum, rounded to a whole point						−84

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −41, −49, −42, −35, −34, −59, −68, −71, −67, −68, −84 → −56.2
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 8 · 2016→2017: 7 · 2017→2018: 7 · 2018→2019: 1 · 2019→2021: 25 · 2021→2022: 9 · 2022→2023: 3 · 2023→2024: 4 · 2024→2025: 1 · 2025→2026: 16 → average 8.1
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 8.1 × 2.66 = 21.5. Upper limit −34.7, lower limit −77.7.

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.

Mariposa County Unified