Cave Language Academy: 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	93,588	2375.1	− 2432	−56.9	× 53 / 92	−32.8
4	93,591	2408.7	− 2473	−64.3	× 39 / 92	−27.3
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	86,963	2395.5	− 2432	−36.5	× 39 / 120	−11.9
4	86,965	2433.0	− 2473	−40	× 47 / 120	−15.7
5	86,967	2510.1	− 2502	8.1	× 34 / 120	2.3
Sum, rounded to a whole point						−25

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	89,424	2405.2	− 2432	−26.8	× 48 / 157	−8.2
4	89,427	2431.5	− 2473	−41.5	× 35 / 157	−9.3
5	89,428	2504.7	− 2502	2.7	× 45 / 157	0.8
6	89,431	2536.4	− 2531	5.4	× 29 / 157	1
Sum, rounded to a whole point						−16

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	89,634	2391.9	− 2432	−40.1	× 33 / 177	−7.5
4	89,635	2469.1	− 2473	−3.9	× 45 / 177	−1
5	89,638	2452.3	− 2502	−49.7	× 36 / 177	−10.1
6	89,639	2540.5	− 2531	9.5	× 38 / 177	2
7	89,642	2586.0	− 2552	34	× 25 / 177	4.8
Sum, rounded to a whole point						−12

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	90,251	2444.1	− 2432	12.1	× 39 / 201	2.3
4	90,252	2422.1	− 2473	−50.9	× 35 / 201	−8.9
5	90,253	2490.5	− 2502	−11.5	× 46 / 201	−2.6
6	90,254	2495.9	− 2531	−35.1	× 25 / 201	−4.4
7	90,255	2532.1	− 2552	−19.9	× 32 / 201	−3.2
8	90,256	2581.9	− 2567	14.9	× 24 / 201	1.8
Sum, rounded to a whole point						−15

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	90,511	2408.9	− 2432	−23.1	× 46 / 187	−5.7
4	90,512	2505.1	− 2473	32.1	× 36 / 187	6.2
5	90,513	2482.7	− 2502	−19.3	× 34 / 187	−3.5
6	90,514	2549.7	− 2531	18.7	× 24 / 187	2.4
7	90,515	2532.9	− 2552	−19.1	× 22 / 187	−2.2
8	90,516	2575.3	− 2567	8.3	× 25 / 187	1.1
Sum, rounded to a whole point						−2

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	90,405	2430.2	− 2432	−1.8	× 51 / 206	−0.4
4	90,406	2470.2	− 2473	−2.8	× 44 / 206	−0.6
5	90,407	2531.3	− 2502	29.3	× 35 / 206	5
6	90,408	2472.5	− 2531	−58.5	× 33 / 206	−9.4
7	90,409	2578.6	− 2552	26.6	× 22 / 206	2.8
8	90,410	2562.1	− 2567	−4.9	× 21 / 206	−0.5
Sum, rounded to a whole point						−3

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	90,350	2422.4	− 2432	−9.6	× 55 / 234	−2.3
4	90,351	2482.4	− 2473	9.4	× 49 / 234	2
5	90,352	2486.1	− 2502	−15.9	× 45 / 234	−3.1
6	90,353	2548.7	− 2531	17.7	× 31 / 234	2.3
7	90,354	2514.4	− 2552	−37.6	× 31 / 234	−5
8	90,355	2572.1	− 2567	5.1	× 23 / 234	0.5
Sum, rounded to a whole point						−5

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	90,032	2429.7	− 2432	−2.3	× 48 / 241	−0.5
4	90,033	2464.9	− 2473	−8.1	× 54 / 241	−1.8
5	90,034	2511.7	− 2502	9.7	× 46 / 241	1.9
6	90,035	2544.3	− 2531	13.3	× 35 / 241	1.9
7	90,036	2558.2	− 2552	6.2	× 28 / 241	0.7
8	90,037	2527.0	− 2567	−40	× 30 / 241	−5
Sum, rounded to a whole point						−3

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −60, −25, −16, −12, −15, −2, −3, −5, −3 → −15.7
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 35 · 2016→2017: 9 · 2017→2018: 4 · 2018→2019: 3 · 2019→2022: 13 · 2022→2023: 1 · 2023→2024: 2 · 2024→2025: 2 → average 8.6
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 8.6 × 2.66 = 22.9. Upper limit 7.2, lower limit −38.6.

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, 2025–26.