Chester Junior/Senior High: 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.

7th The average 7th grader scores just under the grade 6 bar. 2527 vs. 2531. The 7th-grade bar is 2552.
8th The average 8th grader scores 11 points under the grade 6 bar. 2520 vs. 2531. The 8th-grade bar is 2567.
11th The average 11th grader meets the grade 11 bar. 2637 vs. 2583.

2026 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.

2015 from sb_ca2015_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	54,976	2510.3	− 2552	−41.7	× 18 / 67	−11.2
8	54,979	2561.0	− 2567	−6	× 23 / 67	−2.1
11	54,980	2592.6	− 2583	9.6	× 26 / 67	3.7
Sum, rounded to a whole point						−10

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	51,069	2528.9	− 2552	−23.1	× 25 / 66	−8.8
8	51,072	2553.8	− 2567	−13.2	× 16 / 66	−3.2
11	51,074	2613.8	− 2583	30.8	× 25 / 66	11.7
Sum, rounded to a whole point						0

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	52,526	2522.0	− 2552	−30	× 23 / 75	−9.2
8	52,528	2526.9	− 2567	−40.1	× 29 / 75	−15.5
11	52,529	2642.3	− 2583	59.3	× 23 / 75	18.2
Sum, rounded to a whole point						−7

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	52,597	2549.6	− 2552	−2.4	× 30 / 79	−0.9
8	52,600	2537.0	− 2567	−30	× 23 / 79	−8.7
11	52,601	2634.1	− 2583	51.1	× 26 / 79	16.8
Sum, rounded to a whole point						7

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	52,774	2507.2	− 2552	−44.8	× 22 / 74	−13.3
8	52,775	2544.2	− 2567	−22.8	× 31 / 74	−9.6
11	52,776	2613.6	− 2583	30.6	× 21 / 74	8.7
Sum, rounded to a whole point						−14

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	51,555	2528.4	− 2552	−23.6	× 20 / 53	−8.9
8	51,556	2532.2	− 2567	−34.8	× 22 / 53	−14.4
11	51,557	2640.6	− 2583	57.6	× 11 / 53	12
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
7	52,754	2482.0	− 2552	−70	× 21 / 57	−25.8
8	52,755	2472.7	− 2567	−94.3	× 20 / 57	−33.1
11	52,756	2624.0	− 2583	41	× 16 / 57	11.5
Sum, rounded to a whole point						−47

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	52,711	2479.0	− 2552	−73	× 21 / 63	−24.3
8	52,712	2553.9	− 2567	−13.1	× 20 / 63	−4.2
11	52,713	2535.5	− 2583	−47.5	× 22 / 63	−16.6
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
7	52,545	2497.8	− 2552	−54.2	× 16 / 59	−14.7
8	52,546	2514.2	− 2567	−52.8	× 22 / 59	−19.7
11	52,547	2629.1	− 2583	46.1	× 21 / 59	16.4
Sum, rounded to a whole point						−18

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	52,309	2488.6	− 2552	−63.4	× 19 / 57	−21.1
8	52,310	2480.2	− 2567	−86.8	× 19 / 57	−28.9
11	52,311	2530.8	− 2583	−52.2	× 19 / 57	−17.4
Sum, rounded to a whole point						−67

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	52,204	2527.3	− 2552	−24.7	× 24 / 53	−11.2
8	52,205	2519.6	− 2567	−47.4	× 16 / 53	−14.3
11	52,206	2637.4	− 2583	54.4	× 13 / 53	13.3
Sum, rounded to a whole point						−12

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −10, 0, −7, 7, −14, −11, −47, −45, −18, −67, −12 → −20.4
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 10 · 2016→2017: 7 · 2017→2018: 14 · 2018→2019: 21 · 2019→2021: 3 · 2021→2022: 36 · 2022→2023: 2 · 2023→2024: 27 · 2024→2025: 49 · 2025→2026: 55 → average 22.4
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 22.4 × 2.66 = 59.6. Upper limit 39.2, lower limit −80.

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.