Anaverde Hills: 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.

2015 from sb_ca2015_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	38,338	2378.5	− 2436	−57.5	× 63 / 366	−9.9
4	38,339	2442.2	− 2485	−42.8	× 54 / 366	−6.3
5	38,342	2451.1	− 2528	−76.9	× 76 / 366	−16
6	38,343	2492.9	− 2552	−59.1	× 58 / 366	−9.4
7	38,346	2458.0	− 2567	−109	× 65 / 366	−19.4
8	38,347	2487.6	− 2586	−98.4	× 50 / 366	−13.4
Sum, rounded to a whole point						−74

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	35,607	2398.9	− 2436	−37.1	× 83 / 420	−7.3
4	35,608	2456.7	− 2485	−28.3	× 65 / 420	−4.4
5	35,611	2454.4	− 2528	−73.6	× 59 / 420	−10.3
6	35,613	2488.6	− 2552	−63.4	× 81 / 420	−12.2
7	35,614	2491.8	− 2567	−75.2	× 63 / 420	−11.3
8	35,616	2472.5	− 2586	−113.5	× 69 / 420	−18.6
Sum, rounded to a whole point						−64

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	36,308	2399.0	− 2436	−37	× 83 / 459	−6.7
4	36,310	2441.2	− 2485	−43.8	× 90 / 459	−8.6
5	36,313	2456.0	− 2528	−72	× 75 / 459	−11.8
6	36,314	2480.5	− 2552	−71.5	× 74 / 459	−11.5
7	36,316	2495.0	− 2567	−72	× 78 / 459	−12.2
8	36,318	2492.2	− 2586	−93.8	× 59 / 459	−12.1
Sum, rounded to a whole point						−63

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	36,295	2418.3	− 2436	−17.7	× 84 / 437	−3.4
4	36,297	2446.3	− 2485	−38.7	× 86 / 437	−7.6
5	36,299	2446.4	− 2528	−81.6	× 56 / 437	−10.5
6	36,301	2479.6	− 2552	−72.4	× 70 / 437	−11.6
7	36,303	2484.3	− 2567	−82.7	× 73 / 437	−13.8
8	36,305	2538.9	− 2586	−47.1	× 68 / 437	−7.3
Sum, rounded to a whole point						−54

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	36,464	2404.0	− 2436	−32	× 90 / 500	−5.8
4	36,465	2445.0	− 2485	−40	× 87 / 500	−7
5	36,466	2444.5	− 2528	−83.5	× 93 / 500	−15.5
6	36,467	2488.8	− 2552	−63.2	× 88 / 500	−11.1
7	36,468	2478.6	− 2567	−88.4	× 71 / 500	−12.6
8	36,469	2496.4	− 2586	−89.6	× 71 / 500	−12.7
Sum, rounded to a whole point						−65

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	36,361	2369.6	− 2436	−66.4	× 78 / 426	−12.2
4	36,362	2419.1	− 2485	−65.9	× 83 / 426	−12.8
5	36,363	2449.6	− 2528	−78.4	× 62 / 426	−11.4
6	36,364	2473.2	− 2552	−78.8	× 86 / 426	−15.9
7	36,365	2495.4	− 2567	−71.6	× 68 / 426	−11.4
8	36,366	2481.9	− 2586	−104.1	× 49 / 426	−12
Sum, rounded to a whole point						−76

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	36,366	2389.3	− 2436	−46.7	× 76 / 429	−8.3
4	36,367	2408.9	− 2485	−76.1	× 76 / 429	−13.5
5	36,368	2468.6	− 2528	−59.4	× 89 / 429	−12.3
6	36,369	2494.5	− 2552	−57.5	× 60 / 429	−8
7	36,370	2516.2	− 2567	−50.8	× 64 / 429	−7.6
8	36,371	2524.9	− 2586	−61.1	× 64 / 429	−9.1
Sum, rounded to a whole point						−59

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	36,218	2386.2	− 2436	−49.8	× 77 / 335	−11.4
4	36,219	2436.1	− 2485	−48.9	× 75 / 335	−10.9
5	36,220	2422.2	− 2528	−105.8	× 84 / 335	−26.5
6	36,221	2469.0	− 2552	−83	× 78 / 335	−19.3
8	36,223	2540.1	− 2586	−45.9	× 21 / 335	−2.9
Sum, rounded to a whole point						−71

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	36,057	2367.3	− 2436	−68.7	× 69 / 279	−17
4	36,058	2456.1	− 2485	−28.9	× 73 / 279	−7.6
5	36,059	2473.0	− 2528	−55	× 72 / 279	−14.2
6	36,060	2443.0	− 2552	−109	× 65 / 279	−25.4
Sum, rounded to a whole point						−64

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −74, −64, −63, −54, −65, −76, −59, −71, −64 → −65.6
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 10 · 2016→2017: 1 · 2017→2018: 9 · 2018→2019: 11 · 2019→2022: 11 · 2022→2023: 17 · 2023→2024: 12 · 2024→2025: 7 → average 9.8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 9.8 × 2.66 = 26.1. Upper limit −39.5, lower limit −91.7.

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.