Contra Costa School Of Performing Arts: 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.

Measured against the grade bars

The state's English test uses one scale for every grade, so a score means the same thing in grade 3 as in grade 11.

6th The average 6th grader scores 25 points under the grade 6 bar. 2506 vs. 2531.
7th The average 7th grader scores 11 points under the grade 6 bar. 2520 vs. 2531. The 7th-grade bar is 2552.
8th The average 8th grader scores 16 points under the grade 7 bar. 2536 vs. 2552. The 8th-grade bar is 2567.
11th The average 11th grader meets the grade 11 bar. 2636 vs. 2583.

2025 results. The English test covers reading, writing, listening and research together. "Meets standard" is the state's mark for being on track for that grade.

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.

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	5,387	2512.6	− 2531	−18.4	× 84 / 193	−8
7	5,389	2580.3	− 2552	28.3	× 59 / 193	8.7
8	5,390	2563.7	− 2567	−3.3	× 50 / 193	−0.9
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
6	5,380	2518.8	− 2531	−12.2	× 91 / 255	−4.4
7	5,383	2534.3	− 2552	−17.7	× 81 / 255	−5.6
8	5,384	2569.2	− 2567	2.2	× 66 / 255	0.6
11	5,387	2639.6	− 2583	56.6	× 17 / 255	3.8
Sum, rounded to a whole point						−6

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	5,428	2503.5	− 2531	−27.5	× 94 / 308	−8.4
7	5,429	2546.7	− 2552	−5.3	× 93 / 308	−1.6
8	5,430	2541.6	− 2567	−25.4	× 86 / 308	−7.1
11	5,431	2633.9	− 2583	50.9	× 35 / 308	5.8
Sum, rounded to a whole point						−11

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	5,263	2483.2	− 2531	−47.8	× 73 / 268	−13
7	5,264	2508.7	− 2552	−43.3	× 83 / 268	−13.4
8	5,265	2540.0	− 2567	−27	× 86 / 268	−8.7
11	5,266	2588.2	− 2583	5.2	× 26 / 268	0.5
Sum, rounded to a whole point						−35

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	5,259	2469.9	− 2531	−61.1	× 38 / 220	−10.6
7	5,260	2492.4	− 2552	−59.6	× 84 / 220	−22.8
8	5,261	2526.3	− 2567	−40.7	× 60 / 220	−11.1
11	5,262	2580.5	− 2583	−2.5	× 38 / 220	−0.4
Sum, rounded to a whole point						−45

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	5,198	2451.5	− 2531	−79.5	× 62 / 223	−22.1
7	5,199	2496.9	− 2552	−55.1	× 52 / 223	−12.8
8	5,200	2533.2	− 2567	−33.8	× 86 / 223	−13
11	5,201	2628.4	− 2583	45.4	× 23 / 223	4.7
Sum, rounded to a whole point						−43

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	5,160	2505.8	− 2531	−25.2	× 28 / 147	−4.8
7	5,161	2519.6	− 2552	−32.4	× 53 / 147	−11.7
8	5,162	2536.1	− 2567	−30.9	× 45 / 147	−9.5
11	5,163	2635.9	− 2583	52.9	× 21 / 147	7.6
Sum, rounded to a whole point						−18

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. 0, −6, −11, −35, −45, −43, −18 → −22.6
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2017→2018: 6 · 2018→2019: 5 · 2019→2022: 24 · 2022→2023: 10 · 2023→2024: 2 · 2024→2025: 25 → average 12
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 12 × 2.66 = 31.9. Upper limit 9.3, lower limit −54.5.

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 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25.