Palmdale Learning Plaza: 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
3	35,713	2372.3	− 2432	−59.7	× 87 / 550	−9.4
4	35,716	2436.6	− 2473	−36.4	× 88 / 550	−5.8
5	35,717	2489.0	− 2502	−13	× 97 / 550	−2.3
6	35,720	2494.8	− 2531	−36.2	× 96 / 550	−6.3
7	35,721	2546.4	− 2552	−5.6	× 91 / 550	−0.9
8	35,724	2600.1	− 2567	33.1	× 91 / 550	5.5
Sum, rounded to a whole point						−19

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	33,367	2392.3	− 2432	−39.7	× 89 / 544	−6.5
4	33,368	2429.7	− 2473	−43.3	× 91 / 544	−7.2
5	33,371	2490.4	− 2502	−11.6	× 93 / 544	−2
6	33,372	2522.7	− 2531	−8.3	× 96 / 544	−1.5
7	33,375	2547.0	− 2552	−5	× 85 / 544	−0.8
8	33,376	2588.4	− 2567	21.4	× 90 / 544	3.5
Sum, rounded to a whole point						−14

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	33,955	2390.5	− 2432	−41.5	× 89 / 537	−6.9
4	33,958	2455.3	− 2473	−17.7	× 92 / 537	−3
5	33,959	2455.8	− 2502	−46.2	× 94 / 537	−8.1
6	33,962	2489.9	− 2531	−41.1	× 93 / 537	−7.1
7	33,963	2561.0	− 2552	9	× 83 / 537	1.4
8	33,966	2585.2	− 2567	18.2	× 86 / 537	2.9
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
3	33,966	2391.0	− 2432	−41	× 87 / 532	−6.7
4	33,968	2457.9	− 2473	−15.1	× 94 / 532	−2.7
5	33,970	2453.4	− 2502	−48.6	× 95 / 532	−8.7
6	33,972	2512.8	− 2531	−18.2	× 89 / 532	−3
7	33,974	2551.2	− 2552	−0.8	× 83 / 532	−0.1
8	33,976	2583.0	− 2567	16	× 84 / 532	2.5
Sum, rounded to a whole point						−19

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,143	2402.7	− 2432	−29.3	× 92 / 576	−4.7
4	34,144	2444.8	− 2473	−28.2	× 98 / 576	−4.8
5	34,145	2483.9	− 2502	−18.1	× 102 / 576	−3.2
6	34,146	2533.7	− 2531	2.7	× 96 / 576	0.5
7	34,147	2555.6	− 2552	3.6	× 94 / 576	0.6
8	34,148	2579.4	− 2567	12.4	× 94 / 576	2
Sum, rounded to a whole point						−10

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,056	2369.9	− 2432	−62.1	× 88 / 513	−10.7
4	34,057	2427.1	− 2473	−45.9	× 94 / 513	−8.4
5	34,058	2491.9	− 2502	−10.1	× 95 / 513	−1.9
6	34,059	2498.1	− 2531	−32.9	× 84 / 513	−5.4
7	34,060	2549.9	− 2552	−2.1	× 85 / 513	−0.3
8	34,061	2557.4	− 2567	−9.6	× 67 / 513	−1.3
Sum, rounded to a whole point						−28

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,107	2401.2	− 2432	−30.8	× 92 / 523	−5.4
4	34,108	2411.7	− 2473	−61.3	× 89 / 523	−10.4
5	34,109	2482.4	− 2502	−19.6	× 95 / 523	−3.6
6	34,110	2508.9	− 2531	−22.1	× 80 / 523	−3.4
7	34,111	2556.9	− 2552	4.9	× 79 / 523	0.7
8	34,112	2580.7	− 2567	13.7	× 88 / 523	2.3
Sum, rounded to a whole point						−20

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	33,963	2391.5	− 2432	−40.5	× 96 / 526	−7.4
4	33,964	2429.0	− 2473	−44	× 89 / 526	−7.4
5	33,965	2484.8	− 2502	−17.2	× 90 / 526	−2.9
6	33,966	2514.0	− 2531	−17	× 89 / 526	−2.9
7	33,967	2577.4	− 2552	25.4	× 84 / 526	4.1
8	33,968	2584.6	− 2567	17.6	× 78 / 526	2.6
Sum, rounded to a whole point						−14

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	33,826	2400.6	− 2432	−31.4	× 87 / 535	−5.1
4	33,827	2441.3	− 2473	−31.7	× 95 / 535	−5.6
5	33,828	2513.4	− 2502	11.4	× 90 / 535	1.9
6	33,829	2521.8	− 2531	−9.2	× 91 / 535	−1.6
7	33,830	2571.6	− 2552	19.6	× 87 / 535	3.2
8	33,831	2581.2	− 2567	14.2	× 85 / 535	2.3
Sum, rounded to a whole point						−5

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −19, −14, −21, −19, −10, −28, −20, −14, −5 → −16.7
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 5 · 2016→2017: 7 · 2017→2018: 2 · 2018→2019: 9 · 2019→2022: 18 · 2022→2023: 8 · 2023→2024: 6 · 2024→2025: 9 → average 8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 8 × 2.66 = 21.3. Upper limit 4.6, lower limit −38.

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.