Muroc Joint 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	17,629	2431.5	− 2436	−4.5	× 156 / 985	−0.7
4	17,631	2448.4	− 2485	−36.6	× 147 / 985	−5.5
5	17,633	2462.6	− 2528	−65.4	× 138 / 985	−9.2
6	17,635	2497.5	− 2552	−54.5	× 127 / 985	−7
7	17,637	2522.8	− 2567	−44.2	× 138 / 985	−6.2
8	17,639	2518.3	− 2586	−67.7	× 149 / 985	−10.2
11	17,641	2544.1	− 2628	−83.9	× 130 / 985	−11.1
Sum, rounded to a whole point						−50

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,638	2432.8	− 2436	−3.2	× 151 / 922	−0.5
4	16,639	2460.8	− 2485	−24.2	× 137 / 922	−3.6
5	16,641	2478.5	− 2528	−49.5	× 146 / 922	−7.8
6	16,643	2513.5	− 2552	−38.5	× 140 / 922	−5.8
7	16,645	2515.3	− 2567	−51.7	× 110 / 922	−6.2
8	16,648	2523.6	− 2586	−62.4	× 117 / 922	−7.9
11	16,650	2540.8	− 2628	−87.2	× 121 / 922	−11.4
Sum, rounded to a whole point						−43

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,960	2426.2	− 2436	−9.8	× 151 / 957	−1.5
4	16,961	2439.6	− 2485	−45.4	× 145 / 957	−6.9
5	16,963	2479.8	− 2528	−48.2	× 137 / 957	−6.9
6	16,965	2507.8	− 2552	−44.2	× 145 / 957	−6.7
7	16,967	2517.5	− 2567	−49.5	× 141 / 957	−7.3
8	16,970	2509.7	− 2586	−76.3	× 121 / 957	−9.6
11	16,972	2560.7	− 2628	−67.3	× 117 / 957	−8.2
Sum, rounded to a whole point						−47

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,979	2437.5	− 2436	1.5	× 144 / 955	0.2
4	16,980	2456.3	− 2485	−28.7	× 143 / 955	−4.3
5	16,983	2474.2	− 2528	−53.8	× 142 / 955	−8
6	16,984	2510.3	− 2552	−41.7	× 126 / 955	−5.5
7	16,987	2507.4	− 2567	−59.6	× 134 / 955	−8.4
8	16,988	2500.1	− 2586	−85.9	× 139 / 955	−12.5
11	16,991	2520.9	− 2628	−107.1	× 127 / 955	−14.2
Sum, rounded to a whole point						−53

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	17,132	2437.6	− 2436	1.6	× 137 / 928	0.2
4	17,133	2440.0	− 2485	−45	× 141 / 928	−6.8
5	17,134	2478.5	− 2528	−49.5	× 138 / 928	−7.4
6	17,135	2503.6	− 2552	−48.4	× 134 / 928	−7
7	17,136	2523.4	− 2567	−43.6	× 142 / 928	−6.7
8	17,137	2533.2	− 2586	−52.8	× 128 / 928	−7.3
11	17,138	2562.8	− 2628	−65.2	× 108 / 928	−7.6
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	16,724	2388.9	− 2436	−47.1	× 112 / 731	−7.2
4	16,725	2432.5	− 2485	−52.5	× 96 / 731	−6.9
5	16,726	2447.7	− 2528	−80.3	× 110 / 731	−12.1
6	16,727	2484.6	− 2552	−67.4	× 111 / 731	−10.2
7	16,728	2498.0	− 2567	−69	× 101 / 731	−9.5
8	16,729	2484.4	− 2586	−101.6	× 107 / 731	−14.9
11	16,730	2532.5	− 2628	−95.5	× 94 / 731	−12.3
Sum, rounded to a whole point						−73

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	17,176	2406.1	− 2436	−29.9	× 149 / 823	−5.4
4	17,177	2412.7	− 2485	−72.3	× 130 / 823	−11.4
5	17,178	2462.4	− 2528	−65.6	× 105 / 823	−8.4
6	17,179	2478.8	− 2552	−73.2	× 117 / 823	−10.4
7	17,180	2487.3	− 2567	−79.7	× 105 / 823	−10.2
8	17,181	2489.9	− 2586	−96.1	× 123 / 823	−14.4
11	17,182	2505.2	− 2628	−122.8	× 94 / 823	−14
Sum, rounded to a whole point						−74

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	17,114	2396.1	− 2436	−39.9	× 126 / 881	−5.7
4	17,115	2426.8	− 2485	−58.2	× 158 / 881	−10.4
5	17,116	2417.3	− 2528	−110.7	× 141 / 881	−17.7
6	17,117	2475.8	− 2552	−76.2	× 118 / 881	−10.2
7	17,118	2483.9	− 2567	−83.1	× 129 / 881	−12.2
8	17,119	2438.6	− 2586	−147.4	× 119 / 881	−19.9
11	17,120	2513.2	− 2628	−114.8	× 90 / 881	−11.7
Sum, rounded to a whole point						−88

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	17,071	2402.0	− 2436	−34	× 129 / 927	−4.7
4	17,072	2414.1	− 2485	−70.9	× 132 / 927	−10.1
5	17,073	2435.3	− 2528	−92.7	× 157 / 927	−15.7
6	17,074	2457.5	− 2552	−94.5	× 151 / 927	−15.4
7	17,075	2473.8	− 2567	−93.2	× 132 / 927	−13.3
8	17,076	2479.9	− 2586	−106.1	× 132 / 927	−15.1
11	17,077	2483.3	− 2628	−144.7	× 94 / 927	−14.7
Sum, rounded to a whole point						−89

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	17,058	2408.7	− 2436	−27.3	× 131 / 891	−4
4	17,059	2442.1	− 2485	−42.9	× 125 / 891	−6
5	17,060	2427.2	− 2528	−100.8	× 124 / 891	−14
6	17,061	2458.6	− 2552	−93.4	× 143 / 891	−15
7	17,062	2471.8	− 2567	−95.2	× 145 / 891	−15.5
8	17,063	2498.4	− 2586	−87.6	× 133 / 891	−13.1
11	17,064	2526.4	− 2628	−101.6	× 90 / 891	−10.3
Sum, rounded to a whole point						−78

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −50, −43, −47, −53, −42, −73, −74, −88, −89, −78 → −63.7
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 7 · 2016→2017: 4 · 2017→2018: 6 · 2018→2019: 11 · 2019→2021: 31 · 2021→2022: 1 · 2022→2023: 14 · 2023→2024: 1 · 2024→2025: 11 → 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 −38.2, lower limit −89.2.

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.