Hudson K-8: math · Schoolio

The shaded band is this school'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.

Measured against the grade bars

The state's math test uses one scale for every grade, so a score means the same thing in grade 3 as in grade 5.

3rd The average 3rd grader scores 53 points under the grade 3 bar. 2383 vs. 2436.
4th The average 4th grader scores just under the grade 3 bar. 2432 vs. 2436. The 4th-grade bar is 2485.
5th The average 5th grader scores 40 points under the grade 4 bar. 2445 vs. 2485. The 5th-grade bar is 2528.

2025 results. "Meets standard" is the state's mark for being on track for that grade.

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	25,932	2415.0	− 2436	−21	× 66 / 582	−2.4
4	25,934	2417.8	− 2485	−67.2	× 81 / 582	−9.4
5	25,936	2490.9	− 2528	−37.1	× 103 / 582	−6.6
6	25,938	2468.4	− 2552	−83.6	× 123 / 582	−17.7
7	25,940	2515.4	− 2567	−51.6	× 96 / 582	−8.5
8	25,942	2506.3	− 2586	−79.7	× 113 / 582	−15.5
Sum, rounded to a whole point						−60

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	24,171	2389.3	− 2436	−46.7	× 81 / 561	−6.7
4	24,173	2440.2	− 2485	−44.8	× 73 / 561	−5.8
5	24,175	2465.9	− 2528	−62.1	× 79 / 561	−8.7
6	24,178	2486.6	− 2552	−65.4	× 110 / 561	−12.8
7	24,179	2518.3	− 2567	−48.7	× 114 / 561	−9.9
8	24,182	2529.5	− 2586	−56.5	× 104 / 561	−10.5
Sum, rounded to a whole point						−55

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	24,673	2431.6	− 2436	−4.4	× 67 / 533	−0.6
4	24,674	2405.6	− 2485	−79.4	× 83 / 533	−12.4
5	24,676	2443.9	− 2528	−84.1	× 87 / 533	−13.7
6	24,679	2500.4	− 2552	−51.6	× 73 / 533	−7.1
7	24,680	2507.8	− 2567	−59.2	× 109 / 533	−12.1
8	24,682	2524.3	− 2586	−61.7	× 114 / 533	−13.2
Sum, rounded to a whole point						−59

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	24,696	2428.0	− 2436	−8	× 72 / 489	−1.2
4	24,697	2452.6	− 2485	−32.4	× 75 / 489	−5
5	24,700	2447.7	− 2528	−80.3	× 84 / 489	−13.8
6	24,701	2484.4	− 2552	−67.6	× 76 / 489	−10.5
7	24,704	2513.0	− 2567	−54	× 72 / 489	−8
8	24,705	2532.8	− 2586	−53.2	× 110 / 489	−12
Sum, rounded to a whole point						−50

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	24,868	2407.8	− 2436	−28.2	× 69 / 457	−4.3
4	24,869	2446.1	− 2485	−38.9	× 81 / 457	−6.9
5	24,870	2467.7	− 2528	−60.3	× 79 / 457	−10.4
6	24,871	2484.6	− 2552	−67.4	× 75 / 457	−11.1
7	24,872	2504.4	− 2567	−62.6	× 80 / 457	−11
8	24,873	2524.6	− 2586	−61.4	× 73 / 457	−9.8
Sum, rounded to a whole point						−53

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	24,147	2396.4	− 2436	−39.6	× 55 / 358	−6.1
4	24,148	2410.6	− 2485	−74.4	× 61 / 358	−12.7
5	24,149	2431.8	− 2528	−96.2	× 68 / 358	−18.3
6	24,150	2462.0	− 2552	−90	× 55 / 358	−13.8
7	24,151	2528.9	− 2567	−38.1	× 56 / 358	−6
8	24,152	2459.0	− 2586	−127	× 63 / 358	−22.3
Sum, rounded to a whole point						−79

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	24,818	2368.8	− 2436	−67.2	× 51 / 161	−21.3
4	24,819	2423.4	− 2485	−61.6	× 56 / 161	−21.4
5	24,820	2437.4	− 2528	−90.6	× 54 / 161	−30.4
Sum, rounded to a whole point						−73

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	24,767	2390.1	− 2436	−45.9	× 68 / 225	−13.9
4	24,768	2421.9	− 2485	−63.1	× 78 / 225	−21.9
5	24,769	2446.7	− 2528	−81.3	× 79 / 225	−28.5
Sum, rounded to a whole point						−64

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	24,619	2404.3	− 2436	−31.7	× 52 / 167	−9.9
4	24,620	2415.9	− 2485	−69.1	× 52 / 167	−21.5
5	24,621	2442.2	− 2528	−85.8	× 63 / 167	−32.4
Sum, rounded to a whole point						−64

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	24,508	2383.4	− 2436	−52.6	× 37 / 123	−15.8
4	24,509	2432.3	− 2485	−52.7	× 44 / 123	−18.9
5	24,510	2444.6	− 2528	−83.4	× 42 / 123	−28.5
Sum, rounded to a whole point						−63

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −60, −55, −59, −50, −53, −79, −73, −64, −64, −63 → −62
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 5 · 2016→2017: 4 · 2017→2018: 9 · 2018→2019: 3 · 2019→2021: 26 · 2021→2022: 6 · 2022→2023: 9 · 2023→2024: 0 · 2024→2025: 1 → average 7
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 7 × 2.66 = 18.6. Upper limit −43.4, lower limit −80.6.

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. From 2014–15, 2015–16, 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25.