Taylion High Desert Academy/Adelanto: 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
6	64,322	2399.6	− 2552	−152.4	× 14 / 125	−17.1
7	64,325	2398.2	− 2567	−168.8	× 21 / 125	−28.4
8	64,326	2396.4	− 2586	−189.6	× 32 / 125	−48.5
11	64,329	2427.9	− 2628	−200.1	× 58 / 125	−92.8
Sum, rounded to a whole point						−187

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
8	59,665	2391.4	− 2586	−194.6	× 16 / 82	−38
11	59,668	2415.5	− 2628	−212.5	× 66 / 82	−171
Sum, rounded to a whole point						−209

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	61,395	2383.3	− 2567	−183.7	× 18 / 96	−34.4
8	61,397	2398.5	− 2586	−187.5	× 21 / 96	−41
11	61,399	2426.3	− 2628	−201.7	× 57 / 96	−119.8
Sum, rounded to a whole point						−195

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	61,492	2456.2	− 2567	−110.8	× 14 / 117	−13.3
8	61,494	2414.5	− 2586	−171.5	× 28 / 117	−41
11	61,496	2441.1	− 2628	−186.9	× 75 / 117	−119.8
Sum, rounded to a whole point						−174

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	61,748	2437.8	− 2567	−129.2	× 17 / 91	−24.1
8	61,749	2423.2	− 2586	−162.8	× 25 / 91	−44.7
11	61,750	2417.2	− 2628	−210.8	× 49 / 91	−113.5
Sum, rounded to a whole point						−182

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	61,841	2327.6	− 2436	−108.4	× 11 / 234	−5.1
4	61,842	2341.5	− 2485	−143.5	× 17 / 234	−10.4
5	61,843	2368.6	− 2528	−159.4	× 19 / 234	−12.9
6	61,844	2405.5	− 2552	−146.5	× 38 / 234	−23.8
7	61,845	2412.6	− 2567	−154.4	× 51 / 234	−33.7
8	61,846	2426.6	− 2586	−159.4	× 40 / 234	−27.2
11	61,847	2441.0	− 2628	−187	× 58 / 234	−46.4
Sum, rounded to a whole point						−160

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	61,785	2301.1	− 2436	−134.9	× 29 / 382	−10.2
4	61,786	2365.4	− 2485	−119.6	× 24 / 382	−7.5
5	61,787	2364.4	− 2528	−163.6	× 34 / 382	−14.6
6	61,788	2401.2	− 2552	−150.8	× 79 / 382	−31.2
7	61,789	2406.5	− 2567	−160.5	× 94 / 382	−39.5
8	61,790	2408.4	− 2586	−177.6	× 67 / 382	−31.1
11	61,791	2445.9	− 2628	−182.1	× 55 / 382	−26.2
Sum, rounded to a whole point						−160

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	61,736	2307.1	− 2436	−128.9	× 36 / 401	−11.6
4	61,737	2344.9	− 2485	−140.1	× 24 / 401	−8.4
5	61,738	2366.7	− 2528	−161.3	× 30 / 401	−12.1
6	61,739	2384.7	− 2552	−167.3	× 60 / 401	−25
7	61,740	2420.9	− 2567	−146.1	× 88 / 401	−32.1
8	61,741	2424.1	− 2586	−161.9	× 104 / 401	−42
11	61,742	2451.7	− 2628	−176.3	× 59 / 401	−25.9
Sum, rounded to a whole point						−157

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	61,499	2340.5	− 2436	−95.5	× 62 / 676	−8.8
4	61,500	2363.1	− 2485	−121.9	× 67 / 676	−12.1
5	61,501	2402.0	− 2528	−126	× 66 / 676	−12.3
6	61,502	2386.3	− 2552	−165.7	× 122 / 676	−29.9
7	61,503	2438.2	− 2567	−128.8	× 120 / 676	−22.9
8	61,504	2422.6	− 2586	−163.4	× 136 / 676	−32.9
11	61,505	2476.2	− 2628	−151.8	× 103 / 676	−23.1
Sum, rounded to a whole point						−142

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −187, −209, −195, −174, −182, −160, −160, −157, −142 → −174
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 22 · 2016→2017: 14 · 2017→2018: 21 · 2018→2019: 8 · 2019→2022: 22 · 2022→2023: 0 · 2023→2024: 3 · 2024→2025: 15 → average 13.1
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 13.1 × 2.66 = 34.8. Upper limit −139.2, lower limit −208.8.

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.