Cappy Culver Elementary: 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	82,040	2385.4	− 2432	−46.6	× 31 / 159	−9.1
4	82,043	2427.0	− 2473	−46	× 23 / 159	−6.7
5	82,044	2496.7	− 2502	−5.3	× 31 / 159	−1
6	82,047	2523.4	− 2531	−7.6	× 36 / 159	−1.7
7	82,048	2535.7	− 2552	−16.3	× 18 / 159	−1.8
8	82,051	2587.9	− 2567	20.9	× 20 / 159	2.6
Sum, rounded to a whole point						−18

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	76,087	2435.2	− 2432	3.2	× 29 / 154	0.6
4	76,088	2477.7	− 2473	4.7	× 34 / 154	1
5	76,091	2543.5	− 2502	41.5	× 22 / 154	5.9
6	76,093	2528.7	− 2531	−2.3	× 23 / 154	−0.3
7	76,095	2555.4	− 2552	3.4	× 30 / 154	0.7
8	76,096	2572.4	− 2567	5.4	× 16 / 154	0.6
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	78,123	2432.5	− 2432	0.5	× 21 / 153	0.1
4	78,126	2462.3	− 2473	−10.7	× 33 / 153	−2.3
5	78,128	2515.9	− 2502	13.9	× 33 / 153	3
6	78,130	2516.2	− 2531	−14.8	× 21 / 153	−2
7	78,132	2561.9	− 2552	9.9	× 20 / 153	1.3
8	78,134	2598.6	− 2567	31.6	× 25 / 153	5.2
Sum, rounded to a whole point						5

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	78,278	2431.9	− 2432	−0.1	× 21 / 132	0
4	78,281	2448.9	− 2473	−24.1	× 20 / 132	−3.7
5	78,282	2527.5	− 2502	25.5	× 30 / 132	5.8
6	78,285	2533.0	− 2531	2	× 29 / 132	0.4
7	78,286	2527.8	− 2552	−24.2	× 17 / 132	−3.1
8	78,289	2580.1	− 2567	13.1	× 15 / 132	1.5
Sum, rounded to a whole point						1

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	78,804	2426.3	− 2432	−5.7	× 26 / 127	−1.2
4	78,805	2474.6	− 2473	1.6	× 17 / 127	0.2
5	78,806	2537.9	− 2502	35.9	× 22 / 127	6.2
6	78,807	2554.9	− 2531	23.9	× 27 / 127	5.1
7	78,808	2585.6	− 2552	33.6	× 17 / 127	4.5
8	78,809	2553.3	− 2567	−13.7	× 18 / 127	−1.9
Sum, rounded to a whole point						13

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	79,072	2395.1	− 2432	−36.9	× 27 / 121	−8.2
4	79,073	2449.0	− 2473	−24	× 22 / 121	−4.4
5	79,074	2481.9	− 2502	−20.1	× 29 / 121	−4.8
6	79,075	2496.1	− 2531	−34.9	× 18 / 121	−5.2
7	79,076	2545.3	− 2552	−6.7	× 12 / 121	−0.7
8	79,077	2527.8	− 2567	−39.2	× 13 / 121	−4.2
Sum, rounded to a whole point						−27

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	79,054	2394.3	− 2432	−37.7	× 27 / 112	−9.1
4	79,055	2432.3	− 2473	−40.7	× 25 / 112	−9.1
5	79,056	2523.1	− 2502	21.1	× 20 / 112	3.8
6	79,057	2506.3	− 2531	−24.7	× 25 / 112	−5.5
7	79,058	2445.1	− 2552	−106.9	× 15 / 112	−14.3
Sum, rounded to a whole point						−34

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	79,080	2389.0	− 2432	−43	× 28 / 116	−10.4
4	79,081	2448.8	− 2473	−24.2	× 25 / 116	−5.2
5	79,082	2520.3	− 2502	18.3	× 24 / 116	3.8
6	79,083	2522.4	− 2531	−8.6	× 19 / 116	−1.4
7	79,084	2535.6	− 2552	−16.4	× 20 / 116	−2.8
Sum, rounded to a whole point						−16

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	78,758	2390.1	− 2432	−41.9	× 26 / 137	−8
4	78,759	2457.5	− 2473	−15.5	× 28 / 137	−3.2
5	78,760	2537.1	− 2502	35.1	× 25 / 137	6.4
6	78,761	2538.4	− 2531	7.4	× 22 / 137	1.2
7	78,762	2535.9	− 2552	−16.1	× 20 / 137	−2.4
8	78,763	2484.4	− 2567	−82.6	× 16 / 137	−9.6
Sum, rounded to a whole point						−16

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −18, 8, 5, 1, 13, −27, −34, −16, −16 → −9.3
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 26 · 2016→2017: 3 · 2017→2018: 4 · 2018→2019: 12 · 2019→2022: 40 · 2022→2023: 7 · 2023→2024: 18 · 2024→2025: 0 → average 13.8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 13.8 × 2.66 = 36.7. Upper limit 27.4, lower limit −46.

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.