Feaster (Mae L.) Charter: 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	70,696	2415.1	− 2432	−16.9	× 151 / 692	−3.7
4	70,698	2461.6	− 2473	−11.4	× 129 / 692	−2.1
5	70,700	2499.3	− 2502	−2.7	× 147 / 692	−0.6
6	70,702	2530.9	− 2531	−0.1	× 142 / 692	0
7	70,704	2574.0	− 2552	22	× 81 / 692	2.6
8	70,706	2601.2	− 2567	34.2	× 42 / 692	2.1
Sum, rounded to a whole point						−2

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	65,526	2413.8	− 2432	−18.2	× 153 / 758	−3.7
4	65,527	2474.4	− 2473	1.4	× 149 / 758	0.3
5	65,530	2496.3	− 2502	−5.7	× 137 / 758	−1
6	65,531	2543.1	− 2531	12.1	× 151 / 758	2.4
7	65,534	2578.6	− 2552	26.6	× 91 / 758	3.2
8	65,536	2615.1	− 2567	48.1	× 77 / 758	4.9
Sum, rounded to a whole point						6

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	67,341	2422.7	− 2432	−9.3	× 143 / 772	−1.7
4	67,344	2463.6	− 2473	−9.4	× 156 / 772	−1.9
5	67,345	2491.7	− 2502	−10.3	× 150 / 772	−2
6	67,348	2517.1	− 2531	−13.9	× 145 / 772	−2.6
7	67,349	2576.0	− 2552	24	× 95 / 772	3
8	67,352	2614.1	− 2567	47.1	× 83 / 772	5.1
Sum, rounded to a whole point						0

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	67,447	2422.8	− 2432	−9.2	× 132 / 762	−1.6
4	67,450	2482.5	− 2473	9.5	× 136 / 762	1.7
5	67,451	2485.7	− 2502	−16.3	× 161 / 762	−3.4
6	67,454	2525.7	− 2531	−5.3	× 154 / 762	−1.1
7	67,455	2568.9	− 2552	16.9	× 90 / 762	2
8	67,458	2600.4	− 2567	33.4	× 89 / 762	3.9
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	67,958	2423.8	− 2432	−8.2	× 130 / 707	−1.5
4	67,959	2474.9	− 2473	1.9	× 124 / 707	0.3
5	67,960	2505.0	− 2502	3	× 135 / 707	0.6
6	67,961	2527.3	− 2531	−3.7	× 146 / 707	−0.8
7	67,962	2564.8	− 2552	12.8	× 93 / 707	1.7
8	67,963	2588.5	− 2567	21.5	× 79 / 707	2.4
Sum, rounded to a whole point						3

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	68,086	2377.2	− 2432	−54.8	× 138 / 732	−10.3
4	68,087	2424.1	− 2473	−48.9	× 126 / 732	−8.4
5	68,088	2476.8	− 2502	−25.2	× 150 / 732	−5.2
6	68,089	2510.4	− 2531	−20.6	× 124 / 732	−3.5
7	68,090	2536.4	− 2552	−15.6	× 96 / 732	−2
8	68,091	2551.4	− 2567	−15.6	× 98 / 732	−2.1
Sum, rounded to a whole point						−32

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	68,104	2390.1	− 2432	−41.9	× 146 / 749	−8.2
4	68,105	2392.7	− 2473	−80.3	× 141 / 749	−15.1
5	68,106	2459.9	− 2502	−42.1	× 126 / 749	−7.1
6	68,107	2489.8	− 2531	−41.2	× 143 / 749	−7.9
7	68,108	2550.0	− 2552	−2	× 99 / 749	−0.3
8	68,109	2541.6	− 2567	−25.4	× 94 / 749	−3.2
Sum, rounded to a whole point						−42

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	68,098	2386.6	− 2432	−45.4	× 123 / 735	−7.6
4	68,099	2426.5	− 2473	−46.5	× 145 / 735	−9.2
5	68,100	2455.5	− 2502	−46.5	× 149 / 735	−9.4
6	68,101	2478.3	− 2531	−52.7	× 129 / 735	−9.2
7	68,102	2558.6	− 2552	6.6	× 97 / 735	0.9
8	68,103	2550.3	− 2567	−16.7	× 92 / 735	−2.1
Sum, rounded to a whole point						−37

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	67,866	2388.3	− 2432	−43.7	× 118 / 745	−6.9
4	67,867	2417.8	− 2473	−55.2	× 133 / 745	−9.9
5	67,868	2459.1	− 2502	−42.9	× 142 / 745	−8.2
6	67,869	2506.6	− 2531	−24.4	× 152 / 745	−5
7	67,870	2567.7	− 2552	15.7	× 102 / 745	2.1
8	67,871	2581.3	− 2567	14.3	× 98 / 745	1.9
Sum, rounded to a whole point						−26

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −2, 6, 0, 1, 3, −32, −42, −37, −26 → −14.3
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 8 · 2016→2017: 6 · 2017→2018: 1 · 2018→2019: 2 · 2019→2022: 35 · 2022→2023: 10 · 2023→2024: 5 · 2024→2025: 11 → average 9.8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 9.8 × 2.66 = 26.1. Upper limit 11.8, lower limit −40.4.

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.