Coast Unified: math

The shaded band is this district'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
3	82,309	2443.4	− 2436	7.4	× 33 / 362	0.7
4	82,310	2459.1	− 2485	−25.9	× 47 / 362	−3.4
5	82,313	2483.4	− 2528	−44.6	× 73 / 362	−9
6	82,314	2492.1	− 2552	−59.9	× 54 / 362	−8.9
7	82,317	2529.7	− 2567	−37.3	× 47 / 362	−4.8
8	82,319	2548.8	− 2586	−37.2	× 52 / 362	−5.3
11	82,320	2539.5	− 2628	−88.5	× 56 / 362	−13.7
Sum, rounded to a whole point						−44

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	76,339	2440.8	− 2436	4.8	× 50 / 361	0.7
4	76,340	2505.0	− 2485	20	× 32 / 361	1.8
5	76,343	2535.8	− 2528	7.8	× 47 / 361	1
6	76,344	2521.3	− 2552	−30.7	× 73 / 361	−6.2
7	76,346	2533.4	− 2567	−33.6	× 51 / 361	−4.7
8	76,349	2565.3	− 2586	−20.7	× 48 / 361	−2.8
11	76,351	2570.6	− 2628	−57.4	× 60 / 361	−9.5
Sum, rounded to a whole point						−20

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	78,379	2391.0	− 2436	−45	× 40 / 338	−5.3
4	78,382	2469.4	− 2485	−15.6	× 50 / 338	−2.3
5	78,384	2546.0	− 2528	18	× 31 / 338	1.7
6	78,386	2562.3	− 2552	10.3	× 43 / 338	1.3
7	78,387	2549.8	− 2567	−17.2	× 65 / 338	−3.3
8	78,390	2562.8	− 2586	−23.2	× 46 / 338	−3.2
11	78,391	2577.9	− 2628	−50.1	× 63 / 338	−9.3
Sum, rounded to a whole point						−20

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	78,530	2427.7	− 2436	−8.3	× 40 / 316	−1.1
4	78,533	2429.6	− 2485	−55.4	× 39 / 316	−6.8
5	78,534	2510.5	− 2528	−17.5	× 50 / 316	−2.8
6	78,537	2571.8	− 2552	19.8	× 33 / 316	2.1
7	78,538	2571.5	− 2567	4.5	× 41 / 316	0.6
8	78,541	2566.7	− 2586	−19.3	× 72 / 316	−4.4
11	78,542	2560.8	− 2628	−67.2	× 41 / 316	−8.7
Sum, rounded to a whole point						−21

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	79,066	2404.6	− 2436	−31.4	× 44 / 290	−4.8
4	79,067	2454.6	− 2485	−30.4	× 39 / 290	−4.1
5	79,068	2460.4	− 2528	−67.6	× 39 / 290	−9.1
6	79,069	2538.0	− 2552	−14	× 50 / 290	−2.4
7	79,070	2585.8	− 2567	18.8	× 32 / 290	2.1
8	79,071	2585.9	− 2586	−0.1	× 40 / 290	0
11	79,072	2563.4	− 2628	−64.6	× 46 / 290	−10.2
Sum, rounded to a whole point						−29

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	77,623	2361.6	− 2436	−74.4	× 36 / 281	−9.5
4	77,624	2416.5	− 2485	−68.5	× 40 / 281	−9.8
5	77,625	2464.3	− 2528	−63.7	× 44 / 281	−10
6	77,626	2461.7	− 2552	−90.3	× 38 / 281	−12.2
7	77,627	2460.6	− 2567	−106.4	× 37 / 281	−14
8	77,628	2525.4	− 2586	−60.6	× 41 / 281	−8.8
11	77,629	2532.2	− 2628	−95.8	× 45 / 281	−15.3
Sum, rounded to a whole point						−80

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	79,322	2406.4	− 2436	−29.6	× 25 / 254	−2.9
4	79,323	2439.8	− 2485	−45.2	× 38 / 254	−6.8
5	79,324	2517.3	− 2528	−10.7	× 39 / 254	−1.6
6	79,325	2469.0	− 2552	−83	× 40 / 254	−13.1
7	79,326	2493.9	− 2567	−73.1	× 39 / 254	−11.2
8	79,327	2471.6	− 2586	−114.4	× 34 / 254	−15.3
11	79,328	2577.0	− 2628	−51	× 39 / 254	−7.8
Sum, rounded to a whole point						−59

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	79,292	2382.5	− 2436	−53.5	× 35 / 247	−7.6
4	79,293	2462.3	− 2485	−22.7	× 24 / 247	−2.2
5	79,294	2508.8	− 2528	−19.2	× 37 / 247	−2.9
6	79,295	2504.3	− 2552	−47.7	× 43 / 247	−8.3
7	79,296	2512.2	− 2567	−54.8	× 38 / 247	−8.4
8	79,297	2487.4	− 2586	−98.6	× 39 / 247	−15.6
11	79,298	2597.4	− 2628	−30.6	× 31 / 247	−3.8
Sum, rounded to a whole point						−49

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	79,328	2415.6	− 2436	−20.4	× 32 / 259	−2.5
4	79,329	2429.4	− 2485	−55.6	× 34 / 259	−7.3
5	79,330	2492.5	− 2528	−35.5	× 27 / 259	−3.7
6	79,331	2504.9	− 2552	−47.1	× 37 / 259	−6.7
7	79,332	2516.9	− 2567	−50.1	× 43 / 259	−8.3
8	79,333	2519.9	− 2586	−66.1	× 37 / 259	−9.4
11	79,334	2526.8	− 2628	−101.2	× 49 / 259	−19.1
Sum, rounded to a whole point						−57

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	79,002	2415.7	− 2436	−20.3	× 26 / 231	−2.3
4	79,003	2463.1	− 2485	−21.9	× 30 / 231	−2.8
5	79,004	2447.4	− 2528	−80.6	× 32 / 231	−11.2
6	79,005	2514.0	− 2552	−38	× 26 / 231	−4.3
7	79,006	2511.5	− 2567	−55.5	× 35 / 231	−8.4
8	79,007	2526.4	− 2586	−59.6	× 45 / 231	−11.6
11	79,008	2481.9	− 2628	−146.1	× 37 / 231	−23.4
Sum, rounded to a whole point						−64

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	78,920	2369.8	− 2436	−66.2	× 34 / 222	−10.1
4	78,921	2450.8	− 2485	−34.2	× 22 / 222	−3.4
5	78,922	2508.0	− 2528	−20	× 29 / 222	−2.6
6	78,923	2476.3	− 2552	−75.7	× 35 / 222	−11.9
7	78,924	2512.0	− 2567	−55	× 30 / 222	−7.4
8	78,925	2507.9	− 2586	−78.1	× 36 / 222	−12.7
11	78,926	2505.1	− 2628	−122.9	× 36 / 222	−19.9
Sum, rounded to a whole point						−68

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −44, −20, −20, −21, −29, −80, −59, −49, −57, −64, −68 → −46.5
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 24 · 2016→2017: 0 · 2017→2018: 1 · 2018→2019: 8 · 2019→2021: 51 · 2021→2022: 21 · 2022→2023: 10 · 2023→2024: 8 · 2024→2025: 7 · 2025→2026: 4 → average 13.4
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 13.4 × 2.66 = 35.6. Upper limit −10.9, lower limit −82.1.

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 — for a district, the total across its schools. From 2014–15, 2015–16, 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.

Schools in Coast Unified