California Online Public Schools North Bay: 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.

4th The average 4th grader scores 35 points under the grade 3 bar. 2401 vs. 2436. The 4th-grade bar is 2485.
7th The average 7th grader scores 44 points under the grade 4 bar. 2441 vs. 2485. The 7th-grade bar is 2567.
8th The average 8th grader scores 20 points under the grade 6 bar. 2532 vs. 2552. The 8th-grade bar is 2586.
11th The average 11th grader scores just under the grade 7 bar. 2563 vs. 2567. The 11th-grade bar is 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.

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
8	18,604	2511.1	− 2586	−74.9	× 11 / 27	−30.5
11	18,606	2605.4	− 2628	−22.6	× 16 / 27	−13.4
Sum, rounded to a whole point						−44

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	18,932	2494.3	− 2552	−57.7	× 11 / 31	−20.5
11	18,939	2560.0	− 2628	−68	× 20 / 31	−43.9
Sum, rounded to a whole point						−64

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	18,944	2494.1	− 2567	−72.9	× 16 / 51	−22.9
8	18,947	2486.7	− 2586	−99.3	× 20 / 51	−38.9
11	18,948	2511.0	− 2628	−117	× 15 / 51	−34.4
Sum, rounded to a whole point						−96

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	19,099	2521.2	− 2567	−45.8	× 17 / 66	−11.8
8	19,100	2506.3	− 2586	−79.7	× 23 / 66	−27.8
11	19,101	2519.3	− 2628	−108.7	× 26 / 66	−42.8
Sum, rounded to a whole point						−82

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	19,150	2466.7	− 2567	−100.3	× 15 / 33	−45.6
11	19,152	2491.6	− 2628	−136.4	× 18 / 33	−74.4
Sum, rounded to a whole point						−120

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
8	19,096	2475.6	− 2586	−110.4	× 12 / 26	−51
11	19,097	2508.6	− 2628	−119.4	× 14 / 26	−64.3
Sum, rounded to a whole point						−115

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	19,041	2520.7	− 2567	−46.3	× 11 / 34	−15
8	19,042	2503.5	− 2586	−82.5	× 11 / 34	−26.7
11	19,043	2499.7	− 2628	−128.3	× 12 / 34	−45.3
Sum, rounded to a whole point						−87

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	19,030	2531.3	− 2567	−35.7	× 13 / 62	−7.5
8	19,031	2550.8	− 2586	−35.2	× 20 / 62	−11.4
11	19,032	2607.0	− 2628	−21	× 29 / 62	−9.8
Sum, rounded to a whole point						−29

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
4	19,048	2401.0	− 2485	−84	× 11 / 74	−12.5
7	19,051	2440.9	− 2567	−126.1	× 11 / 74	−18.7
8	19,052	2532.2	− 2586	−53.8	× 24 / 74	−17.4
11	19,053	2563.1	− 2628	−64.9	× 28 / 74	−24.6
Sum, rounded to a whole point						−73

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −44, −64, −96, −82, −120, −115, −87, −29, −73 → −78.9
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2016→2017: 20 · 2017→2018: 32 · 2018→2019: 14 · 2019→2022: 38 · 2022→2023: 5 · 2023→2024: 28 · 2024→2025: 58 · 2025→2026: 44 → average 29.9
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 29.9 × 2.66 = 79.5. Upper limit 0.6, lower limit −158.4.

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, 2025–26.