Great Valley Academy - Salida: 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.

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,047	2406.0	− 2436	−30	× 94 / 494	−5.7
4	93,048	2489.0	− 2485	4	× 98 / 494	0.8
5	93,051	2467.3	− 2528	−60.7	× 97 / 494	−11.9
6	93,053	2539.9	− 2552	−12.1	× 95 / 494	−2.3
7	93,055	2541.0	− 2567	−26	× 61 / 494	−3.2
8	93,056	2522.2	− 2586	−63.8	× 49 / 494	−6.3
Sum, rounded to a whole point						−29

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,248	2433.8	− 2436	−2.2	× 98 / 532	−0.4
4	93,249	2444.4	− 2485	−40.6	× 94 / 532	−7.2
5	93,252	2501.5	− 2528	−26.5	× 99 / 532	−4.9
6	93,253	2522.8	− 2552	−29.2	× 98 / 532	−5.4
7	93,256	2548.7	− 2567	−18.3	× 92 / 532	−3.2
8	93,257	2544.0	− 2586	−42	× 51 / 532	−4
Sum, rounded to a whole point						−25

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,897	2407.2	− 2436	−28.8	× 96 / 567	−4.9
4	93,898	2466.5	− 2485	−18.5	× 97 / 567	−3.2
5	93,899	2467.0	− 2528	−61	× 97 / 567	−10.4
6	93,900	2540.7	− 2552	−11.3	× 99 / 567	−2
7	93,901	2511.4	− 2567	−55.6	× 94 / 567	−9.2
8	93,902	2538.0	− 2586	−48	× 84 / 567	−7.1
Sum, rounded to a whole point						−37

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	94,142	2445.8	− 2436	9.8	× 92 / 492	1.8
4	94,143	2450.5	− 2485	−34.5	× 82 / 492	−5.8
5	94,144	2482.3	− 2528	−45.7	× 85 / 492	−7.9
6	94,145	2504.2	− 2552	−47.8	× 85 / 492	−8.3
7	94,146	2503.0	− 2567	−64	× 74 / 492	−9.6
8	94,147	2503.5	− 2586	−82.5	× 74 / 492	−12.4
Sum, rounded to a whole point						−42

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	94,038	2387.9	− 2436	−48.1	× 95 / 547	−8.4
4	94,039	2493.2	− 2485	8.2	× 96 / 547	1.4
5	94,040	2463.9	− 2528	−64.1	× 91 / 547	−10.7
6	94,041	2491.7	− 2552	−60.3	× 97 / 547	−10.7
7	94,042	2490.7	− 2567	−76.3	× 91 / 547	−12.7
8	94,043	2492.6	− 2586	−93.4	× 77 / 547	−13.1
Sum, rounded to a whole point						−54

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,923	2408.6	− 2436	−27.4	× 95 / 567	−4.6
4	93,924	2434.7	− 2485	−50.3	× 93 / 567	−8.3
5	93,925	2482.2	− 2528	−45.8	× 95 / 567	−7.7
6	93,926	2486.3	− 2552	−65.7	× 94 / 567	−10.9
7	93,927	2478.4	− 2567	−88.6	× 99 / 567	−15.5
8	93,928	2518.9	− 2586	−67.1	× 91 / 567	−10.8
Sum, rounded to a whole point						−58

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,647	2367.4	− 2436	−68.6	× 96 / 566	−11.6
4	93,648	2453.3	− 2485	−31.7	× 98 / 566	−5.5
5	93,649	2451.3	− 2528	−76.7	× 92 / 566	−12.5
6	93,650	2476.5	− 2552	−75.5	× 92 / 566	−12.3
7	93,651	2475.2	− 2567	−91.8	× 94 / 566	−15.2
8	93,652	2495.5	− 2586	−90.5	× 94 / 566	−15
Sum, rounded to a whole point						−72

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −29, −25, −37, −42, −54, −58, −72 → −45.3
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2017→2018: 4 · 2018→2019: 12 · 2019→2022: 5 · 2022→2023: 12 · 2023→2024: 4 · 2024→2025: 14 → average 8.5
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 8.5 × 2.66 = 22.6. Upper limit −22.7, lower limit −67.9.

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 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.