Kairos Public School Vacaville 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	93,353	2455.1	− 2432	23.1	× 48 / 287	3.9
4	93,354	2463.0	− 2473	−10	× 49 / 287	−1.7
5	93,357	2525.8	− 2502	23.8	× 51 / 287	4.2
6	93,358	2542.2	− 2531	11.2	× 56 / 287	2.2
7	93,361	2570.7	− 2552	18.7	× 57 / 287	3.7
8	93,362	2582.2	− 2567	15.2	× 26 / 287	1.4
Sum, rounded to a whole point						14

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	86,740	2457.9	− 2432	25.9	× 50 / 317	4.1
4	86,742	2490.3	− 2473	17.3	× 52 / 317	2.8
5	86,744	2510.9	− 2502	8.9	× 52 / 317	1.5
6	86,746	2566.1	− 2531	35.1	× 57 / 317	6.3
7	86,747	2582.0	− 2552	30	× 52 / 317	4.9
8	86,750	2599.7	− 2567	32.7	× 54 / 317	5.6
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	89,145	2404.3	− 2432	−27.7	× 51 / 346	−4.1
4	89,146	2482.8	− 2473	9.8	× 56 / 346	1.6
5	89,148	2548.5	− 2502	46.5	× 59 / 346	7.9
6	89,151	2538.8	− 2531	7.8	× 60 / 346	1.4
7	89,152	2591.4	− 2552	39.4	× 62 / 346	7.1
8	89,155	2587.1	− 2567	20.1	× 58 / 346	3.4
Sum, rounded to a whole point						17

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	89,348	2464.2	− 2432	32.2	× 53 / 345	4.9
4	89,351	2510.2	− 2473	37.2	× 58 / 345	6.3
5	89,352	2543.9	− 2502	41.9	× 57 / 345	6.9
6	89,355	2573.8	− 2531	42.8	× 62 / 345	7.7
7	89,356	2571.2	− 2552	19.2	× 62 / 345	3.5
8	89,359	2621.4	− 2567	54.4	× 53 / 345	8.4
Sum, rounded to a whole point						38

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	89,955	2479.8	− 2432	47.8	× 61 / 359	8.1
4	89,956	2495.1	− 2473	22.1	× 55 / 359	3.4
5	89,957	2541.7	− 2502	39.7	× 57 / 359	6.3
6	89,958	2565.8	− 2531	34.8	× 65 / 359	6.3
7	89,959	2618.9	− 2552	66.9	× 63 / 359	11.7
8	89,960	2609.1	− 2567	42.1	× 58 / 359	6.8
Sum, rounded to a whole point						43

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	88,159	2415.0	− 2432	−17	× 57 / 353	−2.7
4	88,160	2466.4	− 2473	−6.6	× 60 / 353	−1.1
5	88,161	2544.6	− 2502	42.6	× 57 / 353	6.9
6	88,162	2559.8	− 2531	28.8	× 57 / 353	4.7
7	88,163	2572.2	− 2552	20.2	× 58 / 353	3.3
8	88,164	2595.6	− 2567	28.6	× 64 / 353	5.2
Sum, rounded to a whole point						16

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	90,227	2433.5	− 2432	1.5	× 66 / 381	0.3
4	90,228	2459.7	− 2473	−13.3	× 63 / 381	−2.2
5	90,229	2529.4	− 2502	27.4	× 61 / 381	4.4
6	90,230	2577.4	− 2531	46.4	× 71 / 381	8.6
7	90,231	2615.8	− 2552	63.8	× 58 / 381	9.7
8	90,232	2608.0	− 2567	41	× 62 / 381	6.7
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	90,117	2423.8	− 2432	−8.2	× 67 / 409	−1.3
4	90,118	2484.9	− 2473	11.9	× 69 / 409	2
5	90,119	2493.7	− 2502	−8.3	× 64 / 409	−1.3
6	90,120	2540.5	− 2531	9.5	× 73 / 409	1.7
7	90,121	2606.5	− 2552	54.5	× 75 / 409	10
8	90,122	2615.7	− 2567	48.7	× 61 / 409	7.3
Sum, rounded to a whole point						18

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	90,064	2412.3	− 2432	−19.7	× 67 / 434	−3
4	90,065	2487.2	− 2473	14.2	× 69 / 434	2.3
5	90,066	2527.8	− 2502	25.8	× 73 / 434	4.3
6	90,067	2536.0	− 2531	5	× 75 / 434	0.9
7	90,068	2580.3	− 2552	28.3	× 76 / 434	5
8	90,069	2614.3	− 2567	47.3	× 74 / 434	8.1
Sum, rounded to a whole point						17

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	89,752	2430.0	− 2432	−2	× 74 / 464	−0.3
4	89,753	2493.5	− 2473	20.5	× 73 / 464	3.2
5	89,754	2512.6	− 2502	10.6	× 74 / 464	1.7
6	89,755	2553.2	− 2531	22.2	× 82 / 464	3.9
7	89,756	2567.4	− 2552	15.4	× 82 / 464	2.7
8	89,757	2594.3	− 2567	27.3	× 79 / 464	4.6
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. 14, 25, 17, 38, 43, 16, 27, 18, 17, 16 → 23.1
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 11 · 2016→2017: 8 · 2017→2018: 21 · 2018→2019: 5 · 2019→2021: 27 · 2021→2022: 11 · 2022→2023: 9 · 2023→2024: 1 · 2024→2025: 1 → average 10.4
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 10.4 × 2.66 = 27.7. Upper limit 50.8, lower limit −4.6.

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.