Rancho Minerva Middle: english

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	76,552	2447.2	− 2531	−83.8	× 251 / 821	−25.6
7	76,554	2492.8	− 2552	−59.2	× 279 / 821	−20.1
8	76,556	2504.5	− 2567	−62.5	× 291 / 821	−22.2
Sum, rounded to a whole point						−68

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	70,951	2457.6	− 2531	−73.4	× 275 / 808	−25
7	70,952	2484.6	− 2552	−67.4	× 254 / 808	−21.2
8	70,954	2508.8	− 2567	−58.2	× 279 / 808	−20.1
Sum, rounded to a whole point						−66

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	72,809	2451.0	− 2531	−80	× 243 / 755	−25.7
7	72,811	2477.0	− 2552	−75	× 267 / 755	−26.5
8	72,813	2480.7	− 2567	−86.3	× 245 / 755	−28
Sum, rounded to a whole point						−80

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	72,939	2465.2	− 2531	−65.8	× 254 / 751	−22.3
7	72,940	2475.1	− 2552	−76.9	× 231 / 751	−23.7
8	72,943	2514.4	− 2567	−52.6	× 266 / 751	−18.6
Sum, rounded to a whole point						−65

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	73,394	2453.5	− 2531	−77.5	× 220 / 671	−25.4
7	73,395	2472.4	− 2552	−79.6	× 229 / 671	−27.2
8	73,396	2481.6	− 2567	−85.4	× 222 / 671	−28.3
Sum, rounded to a whole point						−81

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	73,516	2435.4	− 2531	−95.6	× 185 / 573	−30.9
7	73,517	2463.9	− 2552	−88.1	× 189 / 573	−29.1
8	73,518	2468.9	− 2567	−98.1	× 199 / 573	−34.1
Sum, rounded to a whole point						−94

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	73,500	2420.7	− 2531	−110.3	× 158 / 508	−34.3
7	73,501	2443.1	− 2552	−108.9	× 169 / 508	−36.2
8	73,502	2475.7	− 2567	−91.3	× 181 / 508	−32.5
Sum, rounded to a whole point						−103

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	73,492	2430.4	− 2531	−100.6	× 135 / 422	−32.2
7	73,493	2427.8	− 2552	−124.2	× 139 / 422	−40.9
8	73,494	2454.6	− 2567	−112.4	× 148 / 422	−39.4
Sum, rounded to a whole point						−113

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −68, −66, −80, −65, −81, −94, −103, −113 → −83.8
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 2 · 2016→2017: 14 · 2017→2018: 15 · 2018→2019: 16 · 2019→2022: 13 · 2022→2023: 9 · 2023→2024: 10 → average 11.3
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 11.3 × 2.66 = 30.1. Upper limit −53.7, lower limit −113.9.

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.