Los Alamitos Unified: math

The shaded band is this district'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	53,357	2496.6	− 2436	60.6	× 716 / 5197	8.3
4	53,359	2531.2	− 2485	46.2	× 678 / 5197	6
5	53,362	2554.1	− 2528	26.1	× 727 / 5197	3.7
6	53,363	2583.4	− 2552	31.4	× 768 / 5197	4.6
7	53,366	2586.2	− 2567	19.2	× 752 / 5197	2.8
8	53,367	2602.7	− 2586	16.7	× 769 / 5197	2.5
11	53,370	2629.1	− 2628	1.1	× 787 / 5197	0.2
Sum, rounded to a whole point						28

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	49,569	2516.9	− 2436	80.9	× 660 / 5201	10.3
4	49,572	2544.4	− 2485	59.4	× 719 / 5201	8.2
5	49,574	2572.6	− 2528	44.6	× 691 / 5201	5.9
6	49,575	2594.4	− 2552	42.4	× 758 / 5201	6.2
7	49,578	2605.5	− 2567	38.5	× 811 / 5201	6
8	49,579	2621.1	− 2586	35.1	× 758 / 5201	5.1
11	49,581	2636.0	− 2628	8	× 804 / 5201	1.2
Sum, rounded to a whole point						43

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,934	2507.9	− 2436	71.9	× 695 / 5290	9.4
4	50,935	2549.8	− 2485	64.8	× 685 / 5290	8.4
5	50,938	2574.0	− 2528	46	× 743 / 5290	6.5
6	50,940	2596.5	− 2552	44.5	× 761 / 5290	6.4
7	50,942	2609.4	− 2567	42.4	× 772 / 5290	6.2
8	50,944	2631.8	− 2586	45.8	× 826 / 5290	7.2
11	50,945	2645.3	− 2628	17.3	× 808 / 5290	2.6
Sum, rounded to a whole point						47

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,969	2510.1	− 2436	74.1	× 628 / 5123	9.1
4	50,971	2549.6	− 2485	64.6	× 703 / 5123	8.9
5	50,973	2594.2	− 2528	66.2	× 703 / 5123	9.1
6	50,975	2602.0	− 2552	50	× 805 / 5123	7.9
7	50,977	2613.6	− 2567	46.6	× 770 / 5123	7
8	50,979	2628.4	− 2586	42.4	× 770 / 5123	6.4
11	50,981	2641.4	− 2628	13.4	× 744 / 5123	1.9
Sum, rounded to a whole point						50

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	51,180	2523.7	− 2436	87.7	× 662 / 5106	11.4
4	51,181	2552.0	− 2485	67	× 635 / 5106	8.3
5	51,182	2586.1	− 2528	58.1	× 713 / 5106	8.1
6	51,183	2610.6	− 2552	58.6	× 747 / 5106	8.6
7	51,184	2611.5	− 2567	44.5	× 834 / 5106	7.3
8	51,185	2620.1	− 2586	34.1	× 772 / 5106	5.2
11	51,186	2648.4	− 2628	20.4	× 743 / 5106	3
Sum, rounded to a whole point						52

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
11	49,937	2645.0	− 2628	17	× 695 / 695	17
Sum, rounded to a whole point						17

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	51,106	2506.2	− 2436	70.2	× 597 / 4684	8.9
4	51,107	2547.1	− 2485	62.1	× 671 / 4684	8.9
5	51,108	2575.9	− 2528	47.9	× 624 / 4684	6.4
6	51,109	2593.8	− 2552	41.8	× 682 / 4684	6.1
7	51,110	2591.2	− 2567	24.2	× 653 / 4684	3.4
8	51,111	2583.5	− 2586	−2.5	× 737 / 4684	−0.4
11	51,112	2637.8	− 2628	9.8	× 720 / 4684	1.5
Sum, rounded to a whole point						35

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	51,072	2501.1	− 2436	65.1	× 643 / 4653	9
4	51,073	2549.4	− 2485	64.4	× 597 / 4653	8.3
5	51,074	2575.2	− 2528	47.2	× 687 / 4653	7
6	51,075	2578.2	− 2552	26.2	× 641 / 4653	3.6
7	51,076	2601.8	− 2567	34.8	× 676 / 4653	5.1
8	51,077	2602.4	− 2586	16.4	× 655 / 4653	2.3
11	51,078	2625.0	− 2628	−3	× 754 / 4653	−0.5
Sum, rounded to a whole point						35

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,933	2501.6	− 2436	65.6	× 610 / 4653	8.6
4	50,934	2537.8	− 2485	52.8	× 655 / 4653	7.4
5	50,935	2569.8	− 2528	41.8	× 621 / 4653	5.6
6	50,936	2580.4	− 2552	28.4	× 712 / 4653	4.3
7	50,937	2580.0	− 2567	13	× 634 / 4653	1.8
8	50,938	2615.4	− 2586	29.4	× 676 / 4653	4.3
11	50,939	2629.9	− 2628	1.9	× 745 / 4653	0.3
Sum, rounded to a whole point						32

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,695	2489.7	− 2436	53.7	× 593 / 4540	7
4	50,696	2546.4	− 2485	61.4	× 607 / 4540	8.2
5	50,697	2569.5	− 2528	41.5	× 662 / 4540	6.1
6	50,698	2584.0	− 2552	32	× 645 / 4540	4.5
7	50,699	2590.5	− 2567	23.5	× 692 / 4540	3.6
8	50,700	2611.9	− 2586	25.9	× 639 / 4540	3.6
11	50,701	2612.4	− 2628	−15.6	× 702 / 4540	−2.4
Sum, rounded to a whole point						31

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. 28, 43, 47, 50, 52, 17, 35, 35, 32, 31 → 37
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 15 · 2016→2017: 4 · 2017→2018: 3 · 2018→2019: 2 · 2019→2021: 35 · 2021→2022: 18 · 2022→2023: 0 · 2023→2024: 3 · 2024→2025: 1 → average 9
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 9 × 2.66 = 23.9. Upper limit 60.9, lower limit 13.1.

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 — for a district, the total across its schools. From 2014–15, 2015–16, 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.