Pacific Coast Charter: math

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 math 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 42 points under the grade 5 bar. 2486 vs. 2528. The 7th-grade bar is 2567.
8th The average 8th grader scores 19 points under the grade 4 bar. 2466 vs. 2485. The 8th-grade bar is 2586.
11th The average 11th grader scores 23 points under the grade 5 bar. 2505 vs. 2528. The 11th-grade bar is 2628.

2025 results. "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
5	90,070	2508.4	− 2528	−19.6	× 13 / 68	−3.7
8	90,075	2485.9	− 2586	−100.1	× 16 / 68	−23.6
11	90,078	2502.4	− 2628	−125.6	× 39 / 68	−72
Sum, rounded to a whole point						−99

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	83,543	2543.8	− 2552	−8.2	× 13 / 67	−1.6
11	83,549	2501.6	− 2628	−126.4	× 54 / 67	−101.9
Sum, rounded to a whole point						−103

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	85,865	2568.0	− 2567	1	× 17 / 62	0.3
8	85,868	2485.4	− 2586	−100.6	× 14 / 62	−22.7
11	85,870	2507.1	− 2628	−120.9	× 31 / 62	−60.5
Sum, rounded to a whole point						−83

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
8	86,095	2540.0	− 2586	−46	× 24 / 64	−17.3
11	86,096	2516.8	− 2628	−111.2	× 40 / 64	−69.5
Sum, rounded to a whole point						−87

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
11	86,687	2497.0	− 2628	−131	× 37 / 37	−131
Sum, rounded to a whole point						−131

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
8	86,959	2449.0	− 2586	−137	× 13 / 29	−61.4
11	86,960	2508.0	− 2628	−120	× 16 / 29	−66.2
Sum, rounded to a whole point						−128

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	86,879	2487.7	− 2552	−64.3	× 12 / 64	−12.1
8	86,881	2467.3	− 2586	−118.7	× 11 / 64	−20.4
11	86,882	2528.8	− 2628	−99.2	× 41 / 64	−63.6
Sum, rounded to a whole point						−96

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	86,846	2467.9	− 2567	−99.1	× 11 / 40	−27.3
11	86,848	2520.4	− 2628	−107.6	× 29 / 40	−78
Sum, rounded to a whole point						−105

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	86,528	2485.6	− 2567	−81.4	× 13 / 47	−22.5
8	86,529	2465.8	− 2586	−120.2	× 14 / 47	−35.8
11	86,530	2504.9	− 2628	−123.1	× 20 / 47	−52.4
Sum, rounded to a whole point						−111

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −99, −103, −83, −87, −131, −128, −96, −105, −111 → −104.8
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 4 · 2016→2017: 20 · 2017→2018: 4 · 2018→2019: 44 · 2019→2022: 3 · 2022→2023: 32 · 2023→2024: 9 · 2024→2025: 6 → average 15.3
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 15.3 × 2.66 = 40.7. Upper limit −64.1, lower limit −145.5.

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 2014–15, 2015–16, 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25.