West Shores High: 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.

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	58,738	2440.5	− 2567	−126.5	× 82 / 207	−50.1
8	58,740	2459.6	− 2586	−126.4	× 64 / 207	−39.1
11	58,742	2521.9	− 2628	−106.1	× 61 / 207	−31.3
Sum, rounded to a whole point						−120

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	54,495	2434.9	− 2567	−132.1	× 95 / 248	−50.6
8	54,497	2463.9	− 2586	−122.1	× 86 / 248	−42.3
11	54,499	2530.3	− 2628	−97.7	× 67 / 248	−26.4
Sum, rounded to a whole point						−119

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	56,090	2459.7	− 2567	−107.3	× 72 / 226	−34.2
8	56,092	2434.6	− 2586	−151.4	× 95 / 226	−63.6
11	56,095	2498.2	− 2628	−129.8	× 59 / 226	−33.9
Sum, rounded to a whole point						−132

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	56,189	2425.5	− 2567	−141.5	× 87 / 229	−53.8
8	56,191	2429.4	− 2586	−156.6	× 81 / 229	−55.4
11	56,193	2508.9	− 2628	−119.1	× 61 / 229	−31.7
Sum, rounded to a whole point						−141

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	56,448	2416.6	− 2567	−150.4	× 90 / 263	−51.5
8	56,449	2394.1	− 2586	−191.9	× 95 / 263	−69.3
11	56,450	2506.8	− 2628	−121.2	× 78 / 263	−35.9
Sum, rounded to a whole point						−157

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	55,191	2428.9	− 2567	−138.1	× 63 / 145	−60
8	55,192	2416.8	− 2586	−169.2	× 52 / 145	−60.7
11	55,193	2521.1	− 2628	−106.9	× 30 / 145	−22.1
Sum, rounded to a whole point						−143

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	56,526	2422.4	− 2567	−144.6	× 82 / 271	−43.8
8	56,527	2419.1	− 2586	−166.9	× 102 / 271	−62.8
11	56,528	2452.2	− 2628	−175.8	× 87 / 271	−56.4
Sum, rounded to a whole point						−163

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	56,487	2448.2	− 2567	−118.8	× 91 / 258	−41.9
8	56,488	2404.7	− 2586	−181.3	× 84 / 258	−59
11	56,489	2463.1	− 2628	−164.9	× 83 / 258	−53
Sum, rounded to a whole point						−154

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	56,375	2430.0	− 2567	−137	× 72 / 241	−40.9
8	56,376	2439.2	− 2586	−146.8	× 96 / 241	−58.5
11	56,377	2462.5	− 2628	−165.5	× 73 / 241	−50.1
Sum, rounded to a whole point						−150

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	56,131	2418.3	− 2567	−148.7	× 101 / 256	−58.7
8	56,132	2416.7	− 2586	−169.3	× 77 / 256	−50.9
11	56,133	2487.8	− 2628	−140.2	× 78 / 256	−42.7
Sum, rounded to a whole point						−152

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −120, −119, −132, −141, −157, −143, −163, −154, −150, −152 → −143.1
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 1 · 2016→2017: 13 · 2017→2018: 9 · 2018→2019: 16 · 2019→2021: 14 · 2021→2022: 20 · 2022→2023: 9 · 2023→2024: 4 · 2024→2025: 2 → average 9.8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 9.8 × 2.66 = 26.1. Upper limit −117, lower limit −169.2.

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.