Larchmont Charter: 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	26,787	2476.5	− 2432	44.5	× 109 / 858	5.7
4	26,790	2526.7	− 2473	53.7	× 115 / 858	7.2
5	26,791	2569.5	− 2502	67.5	× 115 / 858	9
6	26,794	2569.5	− 2531	38.5	× 157 / 858	7
7	26,795	2593.2	− 2552	41.2	× 157 / 858	7.5
8	26,798	2607.7	− 2567	40.7	× 159 / 858	7.5
11	26,799	2639.3	− 2583	56.3	× 46 / 858	3
Sum, rounded to a whole point						47

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	24,910	2465.0	− 2432	33	× 113 / 796	4.7
4	24,911	2523.0	− 2473	50	× 109 / 796	6.8
5	24,914	2562.6	− 2502	60.6	× 117 / 796	8.9
6	24,915	2574.8	− 2531	43.8	× 101 / 796	5.6
7	24,918	2588.3	− 2552	36.3	× 155 / 796	7.1
8	24,920	2588.4	− 2567	21.4	× 153 / 796	4.1
11	24,922	2618.2	− 2583	35.2	× 48 / 796	2.1
Sum, rounded to a whole point						39

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	25,406	2480.6	− 2432	48.6	× 111 / 796	6.8
4	25,408	2530.5	− 2473	57.5	× 116 / 796	8.4
5	25,410	2564.2	− 2502	62.2	× 117 / 796	9.1
6	25,412	2587.4	− 2531	56.4	× 122 / 796	8.6
7	25,414	2575.5	− 2552	23.5	× 101 / 796	3
8	25,417	2595.8	− 2567	28.8	× 150 / 796	5.4
11	25,419	2646.5	− 2583	63.5	× 79 / 796	6.3
Sum, rounded to a whole point						48

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	25,434	2487.9	− 2432	55.9	× 112 / 805	7.8
4	25,436	2541.2	− 2473	68.2	× 114 / 805	9.7
5	25,438	2556.5	− 2502	54.5	× 122 / 805	8.3
6	25,440	2571.9	− 2531	40.9	× 132 / 805	6.7
7	25,442	2598.5	− 2552	46.5	× 108 / 805	6.2
8	25,444	2584.5	− 2567	17.5	× 106 / 805	2.3
11	25,446	2653.8	− 2583	70.8	× 111 / 805	9.8
Sum, rounded to a whole point						51

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	25,591	2488.8	− 2432	56.8	× 110 / 784	8
4	25,592	2523.5	− 2473	50.5	× 113 / 784	7.3
5	25,593	2580.8	− 2502	78.8	× 119 / 784	12
6	25,594	2561.4	− 2531	30.4	× 125 / 784	4.8
7	25,595	2590.2	− 2552	38.2	× 119 / 784	5.8
8	25,596	2609.0	− 2567	42	× 101 / 784	5.4
11	25,597	2667.4	− 2583	84.4	× 97 / 784	10.4
Sum, rounded to a whole point						54

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	25,534	2477.7	− 2432	45.7	× 109 / 807	6.2
4	25,535	2528.5	− 2473	55.5	× 107 / 807	7.4
5	25,536	2559.8	− 2502	57.8	× 120 / 807	8.6
6	25,537	2559.1	− 2531	28.1	× 127 / 807	4.4
7	25,538	2568.3	− 2552	16.3	× 120 / 807	2.4
8	25,539	2613.3	− 2567	46.3	× 125 / 807	7.2
11	25,540	2629.3	− 2583	46.3	× 99 / 807	5.7
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	25,487	2493.8	− 2432	61.8	× 112 / 865	8
4	25,488	2527.1	− 2473	54.1	× 113 / 865	7.1
5	25,489	2542.6	− 2502	40.6	× 127 / 865	6
6	25,490	2579.0	− 2531	48	× 134 / 865	7.4
7	25,491	2599.7	− 2552	47.7	× 125 / 865	6.9
8	25,492	2570.5	− 2567	3.5	× 128 / 865	0.5
11	25,493	2663.1	− 2583	80.1	× 126 / 865	11.7
Sum, rounded to a whole point						48

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	25,339	2463.0	− 2432	31	× 111 / 870	4
4	25,340	2528.1	− 2473	55.1	× 110 / 870	7
5	25,341	2553.1	− 2502	51.1	× 120 / 870	7
6	25,342	2580.1	− 2531	49.1	× 130 / 870	7.3
7	25,343	2601.2	− 2552	49.2	× 134 / 870	7.6
8	25,344	2600.7	− 2567	33.7	× 131 / 870	5.1
11	25,345	2654.6	− 2583	71.6	× 134 / 870	11
Sum, rounded to a whole point						49

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	25,228	2472.8	− 2432	40.8	× 112 / 940	4.9
4	25,229	2491.6	− 2473	18.6	× 124 / 940	2.5
5	25,230	2556.1	− 2502	54.1	× 153 / 940	8.8
6	25,231	2585.9	− 2531	54.9	× 144 / 940	8.4
7	25,232	2608.8	− 2552	56.8	× 137 / 940	8.3
8	25,233	2603.2	− 2567	36.2	× 139 / 940	5.4
11	25,234	2665.1	− 2583	82.1	× 131 / 940	11.4
Sum, rounded to a whole point						50

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. 47, 39, 48, 51, 54, 42, 48, 49, 50 → 47.6
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 8 · 2016→2017: 9 · 2017→2018: 3 · 2018→2019: 3 · 2019→2022: 12 · 2022→2023: 6 · 2023→2024: 1 · 2024→2025: 1 → average 5.4
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 5.4 × 2.66 = 14.4. Upper limit 62, lower limit 33.2.

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.