Newhall: 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	35,129	2450.0	− 2436	14	× 924 / 3877	3.3
4	35,131	2493.4	− 2485	8.4	× 967 / 3877	2.1
5	35,133	2519.0	− 2528	−9	× 1010 / 3877	−2.3
6	35,135	2559.3	− 2552	7.3	× 976 / 3877	1.8
Sum, rounded to a whole point						5

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	32,797	2465.1	− 2436	29.1	× 990 / 3926	7.3
4	32,800	2508.9	− 2485	23.9	× 949 / 3926	5.8
5	32,801	2544.5	− 2528	16.5	× 974 / 3926	4.1
6	32,804	2573.2	− 2552	21.2	× 1013 / 3926	5.5
Sum, rounded to a whole point						23

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	33,367	2476.5	− 2436	40.5	× 921 / 3959	9.4
4	33,370	2510.8	− 2485	25.8	× 1030 / 3959	6.7
5	33,371	2550.4	− 2528	22.4	× 983 / 3959	5.6
6	33,374	2588.4	− 2552	36.4	× 1025 / 3959	9.4
Sum, rounded to a whole point						31

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	33,388	2481.6	− 2436	45.6	× 864 / 3826	10.3
4	33,390	2522.2	− 2485	37.2	× 930 / 3826	9
5	33,392	2547.9	− 2528	19.9	× 1019 / 3826	5.3
6	33,394	2592.1	− 2552	40.1	× 1013 / 3826	10.6
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	33,560	2477.9	− 2436	41.9	× 904 / 3803	10
4	33,561	2526.0	− 2485	41	× 891 / 3803	9.6
5	33,562	2552.3	− 2528	24.3	× 953 / 3803	6.1
6	33,563	2592.7	− 2552	40.7	× 1055 / 3803	11.3
Sum, rounded to a whole point						37

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	32,767	2457.6	− 2436	21.6	× 785 / 3306	5.1
4	32,768	2483.8	− 2485	−1.2	× 826 / 3306	−0.3
5	32,769	2518.1	− 2528	−9.9	× 827 / 3306	−2.5
6	32,770	2563.3	− 2552	11.3	× 868 / 3306	3
Sum, rounded to a whole point						5

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	33,491	2464.3	− 2436	28.3	× 839 / 3415	7
4	33,492	2507.3	− 2485	22.3	× 818 / 3415	5.3
5	33,493	2535.7	− 2528	7.7	× 874 / 3415	2
6	33,494	2580.8	− 2552	28.8	× 884 / 3415	7.5
Sum, rounded to a whole point						22

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	33,542	2464.2	− 2436	28.2	× 785 / 3440	6.4
4	33,543	2510.3	− 2485	25.3	× 884 / 3440	6.5
5	33,544	2540.7	− 2528	12.7	× 849 / 3440	3.1
6	33,545	2578.5	− 2552	26.5	× 922 / 3440	7.1
Sum, rounded to a whole point						23

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	33,402	2461.1	− 2436	25.1	× 836 / 3424	6.1
4	33,403	2508.1	− 2485	23.1	× 825 / 3424	5.6
5	33,404	2536.0	− 2528	8	× 903 / 3424	2.1
6	33,405	2591.2	− 2552	39.2	× 860 / 3424	9.8
Sum, rounded to a whole point						24

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	33,263	2461.7	− 2436	25.7	× 822 / 3447	6.1
4	33,264	2508.5	− 2485	23.5	× 863 / 3447	5.9
5	33,265	2543.2	− 2528	15.2	× 844 / 3447	3.7
6	33,266	2587.3	− 2552	35.3	× 918 / 3447	9.4
Sum, rounded to a whole point						25

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	33,265	2463.2	− 2436	27.2	× 795 / 3329	6.5
4	33,266	2508.6	− 2485	23.6	× 844 / 3329	6
5	33,267	2542.1	− 2528	14.1	× 851 / 3329	3.6
6	33,268	2589.9	− 2552	37.9	× 839 / 3329	9.6
Sum, rounded to a whole point						26

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. 5, 23, 31, 35, 37, 5, 22, 23, 24, 25, 26 → 23.3
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 18 · 2016→2017: 8 · 2017→2018: 4 · 2018→2019: 2 · 2019→2021: 32 · 2021→2022: 17 · 2022→2023: 1 · 2023→2024: 1 · 2024→2025: 1 · 2025→2026: 1 → average 8.5
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 8.5 × 2.66 = 22.6. Upper limit 45.9, lower limit 0.7.

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.

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