Glenn County Office Of Education: 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
11	12,980	2535.4	− 2628	−92.6	× 19 / 19	−92.6
Sum, rounded to a whole point						−93

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
11	12,000	2546.8	− 2628	−81.2	× 26 / 26	−81.2
Sum, rounded to a whole point						−81

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
11	12,328	2473.4	− 2628	−154.6	× 16 / 16	−154.6
Sum, rounded to a whole point						−155

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
8	12,357	2472.7	− 2586	−113.3	× 15 / 39	−43.6
11	12,358	2470.0	− 2628	−158	× 24 / 39	−97.2
Sum, rounded to a whole point						−141

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	12,456	2473.8	− 2567	−93.2	× 17 / 53	−29.9
8	12,457	2483.7	− 2586	−102.3	× 14 / 53	−27
11	12,458	2513.0	− 2628	−115	× 22 / 53	−47.7
Sum, rounded to a whole point						−105

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	12,272	2391.5	− 2528	−136.5	× 12 / 37	−44.3
11	12,276	2454.1	− 2628	−173.9	× 25 / 37	−117.5
Sum, rounded to a whole point						−162

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
11	12,461	2474.7	− 2628	−153.3	× 19 / 19	−153.3
Sum, rounded to a whole point						−153

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	12,442	2405.1	− 2567	−161.9	× 15 / 50	−48.6
8	12,443	2441.1	− 2586	−144.9	× 13 / 50	−37.7
11	12,444	2498.7	− 2628	−129.3	× 22 / 50	−56.9
Sum, rounded to a whole point						−143

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	12,417	2445.6	− 2567	−121.4	× 20 / 64	−37.9
8	12,418	2392.0	− 2586	−194	× 19 / 64	−57.6
11	12,419	2471.5	− 2628	−156.5	× 25 / 64	−61.1
Sum, rounded to a whole point						−157

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	12,388	2460.4	− 2567	−106.6	× 11 / 51	−23
8	12,389	2449.9	− 2586	−136.1	× 19 / 51	−50.7
11	12,390	2451.0	− 2628	−177	× 21 / 51	−72.9
Sum, rounded to a whole point						−147

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −93, −81, −155, −141, −105, −162, −153, −143, −157, −147 → −133.7
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 12 · 2016→2017: 74 · 2017→2018: 14 · 2018→2019: 36 · 2019→2021: 57 · 2021→2022: 9 · 2022→2023: 10 · 2023→2024: 14 · 2024→2025: 10 → average 26.2
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 26.2 × 2.66 = 69.7. Upper limit −64, lower limit −203.4.

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 — 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.

Schools in Glenn County Office Of Education

Walden Academy Charter
William Finch Charter