Charter School Of San Diego: 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
7	73,926	2508.9	− 2552	−43.1	× 50 / 750	−2.9
8	73,929	2511.6	− 2567	−55.4	× 101 / 750	−7.5
11	73,930	2557.2	− 2583	−25.8	× 599 / 750	−20.6
Sum, rounded to a whole point						−31

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	68,639	2507.8	− 2552	−44.2	× 78 / 463	−7.4
8	68,640	2520.5	− 2567	−46.5	× 111 / 463	−11.1
11	68,643	2595.8	− 2583	12.8	× 274 / 463	7.6
Sum, rounded to a whole point						−11

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	70,453	2484.5	− 2552	−67.5	× 84 / 379	−15
8	70,456	2517.4	− 2567	−49.6	× 120 / 379	−15.7
11	70,458	2603.3	− 2583	20.3	× 175 / 379	9.4
Sum, rounded to a whole point						−21

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	70,603	2502.5	− 2552	−49.5	× 66 / 291	−11.2
8	70,605	2519.3	− 2567	−47.7	× 96 / 291	−15.7
11	70,607	2602.4	− 2583	19.4	× 129 / 291	8.6
Sum, rounded to a whole point						−18

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	71,084	2466.2	− 2531	−64.8	× 32 / 445	−4.7
7	71,085	2510.9	− 2552	−41.1	× 80 / 445	−7.4
8	71,086	2526.9	− 2567	−40.1	× 111 / 445	−10
11	71,087	2585.9	− 2583	2.9	× 222 / 445	1.4
Sum, rounded to a whole point						−21

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	71,184	2474.2	− 2531	−56.8	× 74 / 513	−8.2
7	71,185	2514.1	− 2552	−37.9	× 108 / 513	−8
8	71,186	2508.7	− 2567	−58.3	× 134 / 513	−15.2
11	71,187	2599.6	− 2583	16.6	× 197 / 513	6.4
Sum, rounded to a whole point						−25

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	71,178	2453.1	− 2531	−77.9	× 54 / 446	−9.4
7	71,179	2492.5	− 2552	−59.5	× 106 / 446	−14.1
8	71,180	2534.7	− 2567	−32.3	× 126 / 446	−9.1
11	71,181	2607.5	− 2583	24.5	× 160 / 446	8.8
Sum, rounded to a whole point						−24

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	71,162	2478.9	− 2531	−52.1	× 48 / 460	−5.4
7	71,163	2496.2	− 2552	−55.8	× 100 / 460	−12.1
8	71,164	2503.2	− 2567	−63.8	× 143 / 460	−19.8
11	71,165	2608.4	− 2583	25.4	× 169 / 460	9.3
Sum, rounded to a whole point						−28

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	70,876	2476.2	− 2531	−54.8	× 49 / 436	−6.2
7	70,877	2512.9	− 2552	−39.1	× 97 / 436	−8.7
8	70,878	2513.4	− 2567	−53.6	× 145 / 436	−17.8
11	70,879	2598.3	− 2583	15.3	× 145 / 436	5.1
Sum, rounded to a whole point						−28

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −31, −11, −21, −18, −21, −25, −24, −28, −28 → −23
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 20 · 2016→2017: 10 · 2017→2018: 3 · 2018→2019: 3 · 2019→2022: 4 · 2022→2023: 1 · 2023→2024: 4 · 2024→2025: 0 → average 5.6
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 5.6 × 2.66 = 14.9. Upper limit −8.1, lower limit −37.9.

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.