Santa Clara County Community: 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
8	85,885	2391.3	− 2567	−175.7	× 26 / 94	−48.6
11	85,888	2438.4	− 2583	−144.6	× 68 / 94	−104.6
Sum, rounded to a whole point						−153

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
8	79,728	2403.0	− 2567	−164	× 18 / 84	−35.1
11	79,731	2453.3	− 2583	−129.7	× 66 / 84	−101.9
Sum, rounded to a whole point						−137

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
8	81,909	2386.1	− 2567	−180.9	× 19 / 48	−71.6
11	81,911	2390.7	− 2583	−192.3	× 29 / 48	−116.2
Sum, rounded to a whole point						−188

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
8	82,103	2397.6	− 2567	−169.4	× 19 / 36	−89.4
11	82,104	2397.3	− 2583	−185.7	× 17 / 36	−87.7
Sum, rounded to a whole point						−177

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
8	82,709	2388.0	− 2567	−179	× 14 / 26	−96.4
11	82,710	2450.2	− 2583	−132.8	× 12 / 26	−61.3
Sum, rounded to a whole point						−158

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
11	81,025	2466.7	− 2583	−116.3	× 18 / 18	−116.3
Sum, rounded to a whole point						−116

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	82,894	2404.8	− 2552	−147.2	× 12 / 29	−60.9
8	82,895	2376.9	− 2567	−190.1	× 17 / 29	−111.4
Sum, rounded to a whole point						−172

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
8	82,896	2361.3	− 2567	−205.7	× 13 / 13	−205.7
Sum, rounded to a whole point						−206

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
8	82,578	2414.8	− 2567	−152.2	× 14 / 14	−152.2
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. −153, −137, −188, −177, −158, −116, −172, −206, −152 → −162.1
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 16 · 2016→2017: 51 · 2017→2018: 11 · 2018→2019: 19 · 2019→2021: 42 · 2021→2023: 56 · 2023→2024: 34 · 2024→2025: 54 → average 35.4
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 35.4 × 2.66 = 94.2. Upper limit −67.9, lower limit −256.3.

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.