Coastal Grove 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 8.

3rd The average 3rd grader scores 45 points under the grade 3 bar. 2391 vs. 2436.
4th The average 4th grader scores just under the grade 4 bar. 2480 vs. 2485.
5th The average 5th grader scores just under the grade 5 bar. 2522 vs. 2528.
6th The average 6th grader scores 10 points under the grade 5 bar. 2518 vs. 2528. The 6th-grade bar is 2552.
7th The average 7th grader scores just under the grade 5 bar. 2523 vs. 2528. The 7th-grade bar is 2567.
8th The average 8th grader scores 15 points under the grade 7 bar. 2553 vs. 2567. The 8th-grade bar is 2586.

2026 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
3	13,436	2432.4	− 2436	−3.6	× 23 / 140	−0.6
4	13,439	2486.3	− 2485	1.3	× 18 / 140	0.2
5	13,440	2544.0	− 2528	16	× 23 / 140	2.6
6	13,443	2511.9	− 2552	−40.1	× 26 / 140	−7.4
7	13,444	2627.4	− 2567	60.4	× 26 / 140	11.2
8	13,447	2606.2	− 2586	20.2	× 24 / 140	3.5
Sum, rounded to a whole point						9

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	12,459	2525.5	− 2436	89.5	× 23 / 130	15.8
4	12,461	2519.2	− 2485	34.2	× 22 / 130	5.8
5	12,463	2536.2	− 2528	8.2	× 21 / 130	1.3
6	12,464	2520.3	− 2552	−31.7	× 21 / 130	−5.1
7	12,466	2554.3	− 2567	−12.7	× 26 / 130	−2.5
8	12,469	2682.5	− 2586	96.5	× 17 / 130	12.6
Sum, rounded to a whole point						28

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	12,794	2412.0	− 2436	−24	× 21 / 130	−3.9
4	12,795	2516.6	− 2485	31.6	× 26 / 130	6.3
5	12,798	2560.5	− 2528	32.5	× 20 / 130	5
6	12,799	2498.6	− 2552	−53.4	× 23 / 130	−9.4
7	12,802	2557.3	− 2567	−9.7	× 18 / 130	−1.3
8	12,804	2546.1	− 2586	−39.9	× 22 / 130	−6.8
Sum, rounded to a whole point						−10

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	12,811	2408.7	− 2436	−27.3	× 28 / 137	−5.6
4	12,814	2521.2	− 2485	36.2	× 23 / 137	6.1
5	12,815	2568.3	− 2528	40.3	× 25 / 137	7.4
6	12,818	2539.7	− 2552	−12.3	× 23 / 137	−2.1
7	12,819	2564.3	− 2567	−2.7	× 20 / 137	−0.4
8	12,822	2575.0	− 2586	−11	× 18 / 137	−1.4
Sum, rounded to a whole point						4

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	12,941	2410.8	− 2436	−25.2	× 24 / 136	−4.4
4	12,942	2461.3	− 2485	−23.7	× 26 / 136	−4.5
5	12,943	2551.1	− 2528	23.1	× 24 / 136	4.1
6	12,944	2557.9	− 2552	5.9	× 24 / 136	1
7	12,945	2565.0	− 2567	−2	× 20 / 136	−0.3
8	12,946	2574.4	− 2586	−11.6	× 18 / 136	−1.5
Sum, rounded to a whole point						−6

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	12,777	2417.9	− 2436	−18.1	× 23 / 133	−3.1
4	12,778	2412.1	− 2485	−72.9	× 24 / 133	−13.2
5	12,779	2481.0	− 2528	−47	× 21 / 133	−7.4
6	12,780	2538.4	− 2552	−13.6	× 23 / 133	−2.4
7	12,781	2591.9	− 2567	24.9	× 22 / 133	4.1
8	12,782	2543.4	− 2586	−42.6	× 20 / 133	−6.4
Sum, rounded to a whole point						−28

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	12,974	2440.5	− 2436	4.5	× 27 / 140	0.9
4	12,975	2472.7	− 2485	−12.3	× 27 / 140	−2.4
5	12,976	2462.5	− 2528	−65.5	× 25 / 140	−11.7
6	12,977	2534.5	− 2552	−17.5	× 20 / 140	−2.5
7	12,978	2581.2	− 2567	14.2	× 19 / 140	1.9
8	12,979	2630.4	− 2586	44.4	× 22 / 140	7
Sum, rounded to a whole point						−7

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	12,951	2379.2	− 2436	−56.8	× 22 / 127	−9.8
4	12,952	2443.8	− 2485	−41.2	× 25 / 127	−8.1
5	12,953	2502.0	− 2528	−26	× 23 / 127	−4.7
6	12,954	2502.4	− 2552	−49.6	× 23 / 127	−9
7	12,955	2537.8	− 2567	−29.2	× 13 / 127	−3
8	12,956	2520.3	− 2586	−65.7	× 21 / 127	−10.9
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
3	12,912	2445.9	− 2436	9.9	× 18 / 118	1.5
4	12,913	2474.0	− 2485	−11	× 20 / 118	−1.9
5	12,914	2484.1	− 2528	−43.9	× 26 / 118	−9.7
6	12,915	2519.8	− 2552	−32.2	× 19 / 118	−5.2
7	12,916	2567.4	− 2567	0.4	× 24 / 118	0.1
8	12,917	2581.8	− 2586	−4.2	× 11 / 118	−0.4
Sum, rounded to a whole point						−16

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	12,890	2388.8	− 2436	−47.2	× 25 / 131	−9
4	12,891	2514.4	− 2485	29.4	× 24 / 131	5.4
5	12,892	2481.1	− 2528	−46.9	× 22 / 131	−7.9
6	12,893	2491.1	− 2552	−60.9	× 22 / 131	−10.2
7	12,894	2524.9	− 2567	−42.1	× 16 / 131	−5.1
8	12,895	2572.5	− 2586	−13.5	× 22 / 131	−2.3
Sum, rounded to a whole point						−29

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	12,894	2390.9	− 2436	−45.1	× 21 / 130	−7.3
4	12,895	2480.1	− 2485	−4.9	× 26 / 130	−1
5	12,896	2522.4	− 2528	−5.6	× 25 / 130	−1.1
6	12,897	2518.4	− 2552	−33.6	× 20 / 130	−5.2
7	12,898	2523.3	− 2567	−43.7	× 24 / 130	−8.1
8	12,899	2552.5	− 2586	−33.5	× 14 / 130	−3.6
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. 9, 28, −10, 4, −6, −28, −7, −45, −16, −29, −26 → −11.5
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 19 · 2016→2017: 38 · 2017→2018: 14 · 2018→2019: 10 · 2019→2021: 22 · 2021→2022: 21 · 2022→2023: 38 · 2023→2024: 29 · 2024→2025: 13 · 2025→2026: 3 → average 20.7
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 20.7 × 2.66 = 55.1. Upper limit 43.6, lower limit −66.6.

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.