Northern United - Siskiyou Charter: math

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 11.

8th The average 8th grader scores 18 points under the grade 5 bar. 2510 vs. 2528. The 8th-grade bar is 2586.
11th The average 11th grader scores 36 points under the grade 11 bar. 2592 vs. 2628.

2026 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.

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	88,656	2480.0	− 2552	−72	× 13 / 43	−21.8
8	88,658	2440.9	− 2586	−145.1	× 16 / 43	−54
11	88,659	2463.6	− 2628	−164.4	× 14 / 43	−53.5
Sum, rounded to a whole point						−129

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	86,847	2405.9	− 2436	−30.1	× 11 / 11	−30.1
Sum, rounded to a whole point						−30

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
4	88,939	2455.0	− 2485	−30	× 12 / 23	−15.7
11	88,944	2440.5	− 2628	−187.5	× 11 / 23	−89.7
Sum, rounded to a whole point						−105

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	88,825	2452.8	− 2528	−75.2	× 11 / 35	−23.6
7	88,827	2477.8	− 2567	−89.2	× 11 / 35	−28
11	88,829	2516.2	− 2628	−111.8	× 13 / 35	−41.5
Sum, rounded to a whole point						−93

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	88,810	2503.8	− 2567	−63.2	× 13 / 41	−20
8	88,811	2499.6	− 2586	−86.4	× 11 / 41	−23.2
11	88,812	2491.7	− 2628	−136.3	× 17 / 41	−56.5
Sum, rounded to a whole point						−100

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	88,502	2504.8	− 2567	−62.2	× 12 / 41	−18.2
8	88,503	2555.3	− 2586	−30.7	× 12 / 41	−9
11	88,504	2529.2	− 2628	−98.8	× 17 / 41	−41
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
8	88,202	2510.2	− 2586	−75.8	× 13 / 27	−36.5
11	88,203	2592.3	− 2628	−35.7	× 14 / 27	−18.5
Sum, rounded to a whole point						−55

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −129, −30, −105, −93, −100, −68, −55 → −82.9
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2019→2021: 99 · 2021→2022: 75 · 2022→2023: 12 · 2023→2024: 7 · 2024→2025: 32 · 2025→2026: 13 → average 39.7
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 39.7 × 2.66 = 105.6. Upper limit 22.7, lower limit −188.5.

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 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.