Cambria Grammar: english

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.

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	82,333	2418.3	− 2432	−13.7	× 33 / 153	−3
4	82,334	2446.6	− 2473	−26.4	× 47 / 153	−8.1
5	82,337	2479.5	− 2502	−22.5	× 73 / 153	−10.7
Sum, rounded to a whole point						−22

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	76,363	2420.1	− 2432	−11.9	× 50 / 129	−4.6
4	76,364	2488.6	− 2473	15.6	× 32 / 129	3.9
5	76,366	2525.8	− 2502	23.8	× 47 / 129	8.7
Sum, rounded to a whole point						8

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	78,404	2370.5	− 2432	−61.5	× 40 / 121	−20.3
4	78,405	2457.4	− 2473	−15.6	× 50 / 121	−6.4
5	78,408	2522.4	− 2502	20.4	× 31 / 121	5.2
Sum, rounded to a whole point						−22

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	78,554	2424.3	− 2432	−7.7	× 40 / 129	−2.4
4	78,557	2413.6	− 2473	−59.4	× 39 / 129	−18
5	78,558	2487.5	− 2502	−14.5	× 50 / 129	−5.6
Sum, rounded to a whole point						−26

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	79,082	2389.0	− 2432	−43	× 44 / 122	−15.5
4	79,083	2463.8	− 2473	−9.2	× 39 / 122	−2.9
5	79,084	2460.2	− 2502	−41.8	× 39 / 122	−13.4
Sum, rounded to a whole point						−32

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	77,639	2353.7	− 2432	−78.3	× 36 / 119	−23.7
4	77,640	2421.9	− 2473	−51.1	× 39 / 119	−16.7
5	77,641	2476.7	− 2502	−25.3	× 44 / 119	−9.4
Sum, rounded to a whole point						−50

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	79,338	2387.9	− 2432	−44.1	× 25 / 101	−10.9
4	79,339	2413.4	− 2473	−59.6	× 37 / 101	−21.8
5	79,340	2489.9	− 2502	−12.1	× 39 / 101	−4.7
Sum, rounded to a whole point						−37

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	79,308	2372.7	− 2432	−59.3	× 34 / 94	−21.4
4	79,309	2462.1	− 2473	−10.9	× 24 / 94	−2.8
5	79,310	2497.1	− 2502	−4.9	× 36 / 94	−1.9
Sum, rounded to a whole point						−26

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	79,348	2393.1	− 2432	−38.9	× 32 / 92	−13.5
4	79,349	2394.9	− 2473	−78.1	× 34 / 92	−28.9
5	79,350	2513.2	− 2502	11.2	× 26 / 92	3.2
Sum, rounded to a whole point						−39

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	79,014	2402.1	− 2432	−29.9	× 26 / 88	−8.8
4	79,015	2419.9	− 2473	−53.1	× 30 / 88	−18.1
5	79,016	2442.3	− 2502	−59.7	× 32 / 88	−21.7
Sum, rounded to a whole point						−49

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −22, 8, −22, −26, −32, −50, −37, −26, −39, −49 → −29.5
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 30 · 2016→2017: 30 · 2017→2018: 4 · 2018→2019: 6 · 2019→2021: 18 · 2021→2022: 13 · 2022→2023: 11 · 2023→2024: 13 · 2024→2025: 10 → average 15
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 15 × 2.66 = 39.9. Upper limit 10.4, lower limit −69.4.

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.