Renaissance At Mathson: 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	86,014	2478.1	− 2531	−52.9	× 92 / 272	−17.9
7	86,016	2540.6	− 2552	−11.4	× 94 / 272	−3.9
8	86,018	2586.7	− 2567	19.7	× 86 / 272	6.2
Sum, rounded to a whole point						−16

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	79,820	2575.4	− 2531	44.4	× 96 / 277	15.4
7	79,823	2561.3	− 2552	9.3	× 90 / 277	3
8	79,825	2577.4	− 2567	10.4	× 91 / 277	3.4
Sum, rounded to a whole point						22

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	82,001	2528.3	− 2531	−2.7	× 84 / 272	−0.8
7	82,003	2606.0	− 2552	54	× 95 / 272	18.9
8	82,005	2576.3	− 2567	9.3	× 93 / 272	3.2
Sum, rounded to a whole point						21

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	82,196	2510.8	− 2531	−20.2	× 81 / 253	−6.5
7	82,199	2564.1	− 2552	12.1	× 79 / 253	3.8
8	82,200	2612.1	− 2567	45.1	× 93 / 253	16.6
Sum, rounded to a whole point						14

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	82,805	2495.6	− 2531	−35.4	× 96 / 259	−13.1
7	82,806	2565.6	− 2552	13.6	× 81 / 259	4.3
8	82,807	2568.9	− 2567	1.9	× 82 / 259	0.6
Sum, rounded to a whole point						−8

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	83,010	2443.6	− 2531	−87.4	× 134 / 460	−25.5
7	83,011	2478.5	− 2552	−73.5	× 152 / 460	−24.3
8	83,012	2484.9	− 2567	−82.1	× 174 / 460	−31.1
Sum, rounded to a whole point						−81

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	82,993	2445.7	− 2531	−85.3	× 104 / 378	−23.5
7	82,994	2447.9	− 2552	−104.1	× 127 / 378	−35
8	82,995	2482.7	− 2567	−84.3	× 147 / 378	−32.8
Sum, rounded to a whole point						−91

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	82,996	2437.3	− 2531	−93.7	× 87 / 298	−27.4
7	82,997	2483.1	− 2552	−68.9	× 97 / 298	−22.4
8	82,998	2494.2	− 2567	−72.8	× 114 / 298	−27.8
Sum, rounded to a whole point						−78

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	82,678	2467.4	− 2531	−63.6	× 104 / 301	−22
7	82,679	2477.8	− 2552	−74.2	× 96 / 301	−23.7
8	82,680	2516.8	− 2567	−50.2	× 101 / 301	−16.8
Sum, rounded to a whole point						−62

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −16, 22, 21, 14, −8, −81, −91, −78, −62 → −31
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 38 · 2016→2017: 1 · 2017→2018: 7 · 2018→2019: 22 · 2019→2022: 73 · 2022→2023: 10 · 2023→2024: 13 · 2024→2025: 16 → average 22.5
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 22.5 × 2.66 = 59.9. Upper limit 28.9, lower limit −90.9.

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, 2024–25, 2025–26.