Endeavour Middle: 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
6	24,976	2468.2	− 2552	−83.8	× 174 / 739	−19.7
7	24,978	2477.4	− 2567	−89.6	× 271 / 739	−32.9
8	24,980	2482.1	− 2586	−103.9	× 294 / 739	−41.3
Sum, rounded to a whole point						−94

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	23,245	2457.2	− 2552	−94.8	× 230 / 779	−28
7	23,248	2473.7	− 2567	−93.3	× 271 / 779	−32.5
8	23,250	2501.3	− 2586	−84.7	× 278 / 779	−30.2
Sum, rounded to a whole point						−91

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	23,705	2443.2	− 2552	−108.8	× 186 / 720	−28.1
7	23,707	2457.4	− 2567	−109.6	× 285 / 720	−43.4
8	23,710	2486.3	− 2586	−99.7	× 249 / 720	−34.5
Sum, rounded to a whole point						−106

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	23,724	2457.6	− 2552	−94.4	× 181 / 718	−23.8
7	23,726	2442.1	− 2567	−124.9	× 253 / 718	−44
8	23,728	2471.2	− 2586	−114.8	× 284 / 718	−45.4
Sum, rounded to a whole point						−113

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	23,897	2447.1	− 2552	−104.9	× 197 / 687	−30.1
7	23,898	2471.7	− 2567	−95.3	× 245 / 687	−34
8	23,899	2466.9	− 2586	−119.1	× 245 / 687	−42.5
Sum, rounded to a whole point						−107

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	23,834	2410.1	− 2552	−141.9	× 221 / 664	−47.2
7	23,835	2437.0	− 2567	−130	× 230 / 664	−45
8	23,836	2450.7	− 2586	−135.3	× 213 / 664	−43.4
Sum, rounded to a whole point						−136

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	23,799	2415.3	− 2552	−136.7	× 217 / 707	−42
7	23,800	2416.6	− 2567	−150.4	× 263 / 707	−55.9
8	23,801	2429.3	− 2586	−156.7	× 227 / 707	−50.3
Sum, rounded to a whole point						−148

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	23,649	2402.9	− 2552	−149.1	× 232 / 738	−46.9
7	23,650	2434.0	− 2567	−133	× 255 / 738	−46
8	23,651	2424.6	− 2586	−161.4	× 251 / 738	−54.9
Sum, rounded to a whole point						−148

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	23,556	2414.9	− 2552	−137.1	× 251 / 748	−46
7	23,557	2425.5	− 2567	−141.5	× 240 / 748	−45.4
8	23,558	2436.4	− 2586	−149.6	× 257 / 748	−51.4
Sum, rounded to a whole point						−143

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −94, −91, −106, −113, −107, −136, −148, −148, −143 → −120.7
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 3 · 2016→2017: 15 · 2017→2018: 7 · 2018→2019: 6 · 2019→2022: 29 · 2022→2023: 12 · 2023→2024: 0 · 2024→2025: 5 → average 9.6
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 9.6 × 2.66 = 25.5. Upper limit −95.2, lower limit −146.2.

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.