South Monterey County Joint Union High: 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
11	45,724	2489.4	− 2628	−138.6	× 456 / 456	−138.6
Sum, rounded to a whole point						−139

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
11	42,427	2507.9	− 2628	−120.1	× 483 / 483	−120.1
Sum, rounded to a whole point						−120

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
11	43,488	2500.9	− 2628	−127.1	× 492 / 492	−127.1
Sum, rounded to a whole point						−127

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
11	43,513	2495.4	− 2628	−132.6	× 536 / 536	−132.6
Sum, rounded to a whole point						−133

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
11	43,638	2514.1	− 2628	−113.9	× 563 / 563	−113.9
Sum, rounded to a whole point						−114

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
11	42,477	2500.2	− 2628	−127.8	× 549 / 549	−127.8
Sum, rounded to a whole point						−128

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
11	43,362	2499.5	− 2628	−128.5	× 626 / 626	−128.5
Sum, rounded to a whole point						−129

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
11	43,370	2498.6	− 2628	−129.4	× 670 / 670	−129.4
Sum, rounded to a whole point						−129

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
11	43,194	2494.1	− 2628	−133.9	× 656 / 656	−133.9
Sum, rounded to a whole point						−134

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
11	42,949	2504.5	− 2628	−123.5	× 610 / 610	−123.5
Sum, rounded to a whole point						−124

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −139, −120, −127, −133, −114, −128, −129, −129, −134, −124 → −127.7
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: 7 · 2017→2018: 6 · 2018→2019: 19 · 2019→2021: 14 · 2021→2022: 1 · 2022→2023: 0 · 2023→2024: 5 · 2024→2025: 10 → average 9
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 9 × 2.66 = 23.9. Upper limit −103.8, lower limit −151.6.

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 — 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.