Walnut Valley 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	39,913	2473.1	− 2436	37.1	× 900 / 7691	4.3
4	39,915	2524.8	− 2485	39.8	× 891 / 7691	4.6
5	39,917	2553.7	− 2528	25.7	× 911 / 7691	3
6	39,919	2584.1	− 2552	32.1	× 1046 / 7691	4.4
7	39,921	2605.7	− 2567	38.7	× 1200 / 7691	6
8	39,923	2622.1	− 2586	36.1	× 1347 / 7691	6.3
11	39,925	2678.7	− 2628	50.7	× 1396 / 7691	9.2
Sum, rounded to a whole point						38

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	36,975	2490.7	− 2436	54.7	× 920 / 7548	6.7
4	36,976	2528.4	− 2485	43.4	× 952 / 7548	5.5
5	36,979	2568.6	− 2528	40.6	× 945 / 7548	5.1
6	36,981	2597.2	− 2552	45.2	× 1041 / 7548	6.2
7	36,983	2622.4	− 2567	55.4	× 1152 / 7548	8.5
8	36,984	2633.1	− 2586	47.1	× 1225 / 7548	7.6
11	36,986	2677.5	− 2628	49.5	× 1313 / 7548	8.6
Sum, rounded to a whole point						48

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	37,750	2488.1	− 2436	52.1	× 873 / 7682	5.9
4	37,753	2538.6	− 2485	53.6	× 971 / 7682	6.8
5	37,754	2564.0	− 2528	36	× 989 / 7682	4.6
6	37,756	2604.0	− 2552	52	× 1073 / 7682	7.3
7	37,759	2628.5	− 2567	61.5	× 1125 / 7682	9
8	37,760	2651.1	− 2586	65.1	× 1169 / 7682	9.9
11	37,763	2682.5	− 2628	54.5	× 1482 / 7682	10.5
Sum, rounded to a whole point						54

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	37,693	2491.4	− 2436	55.4	× 852 / 7562	6.2
4	37,695	2540.1	− 2485	55.1	× 924 / 7562	6.7
5	37,697	2576.6	− 2528	48.6	× 1013 / 7562	6.5
6	37,699	2601.7	− 2552	49.7	× 1082 / 7562	7.1
7	37,701	2634.5	− 2567	67.5	× 1135 / 7562	10.1
8	37,703	2648.9	− 2586	62.9	× 1156 / 7562	9.6
11	37,705	2681.9	− 2628	53.9	× 1400 / 7562	10
Sum, rounded to a whole point						56

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	37,907	2496.4	− 2436	60.4	× 864 / 7391	7.1
4	37,908	2540.4	− 2485	55.4	× 879 / 7391	6.6
5	37,909	2579.4	− 2528	51.4	× 980 / 7391	6.8
6	37,910	2616.4	− 2552	64.4	× 1081 / 7391	9.4
7	37,911	2628.2	− 2567	61.2	× 1136 / 7391	9.4
8	37,912	2653.3	− 2586	67.3	× 1164 / 7391	10.6
11	37,913	2689.5	− 2628	61.5	× 1287 / 7391	10.7
Sum, rounded to a whole point						61

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
11	37,022	2701.8	− 2628	73.8	× 986 / 986	73.8
Sum, rounded to a whole point						74

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	37,796	2494.6	− 2436	58.6	× 982 / 7070	8.1
4	37,797	2532.1	− 2485	47.1	× 952 / 7070	6.3
5	37,798	2558.7	− 2528	30.7	× 911 / 7070	4
6	37,799	2595.2	− 2552	43.2	× 969 / 7070	5.9
7	37,800	2626.7	− 2567	59.7	× 1016 / 7070	8.6
8	37,801	2644.9	− 2586	58.9	× 1120 / 7070	9.3
11	37,802	2668.2	− 2628	40.2	× 1120 / 7070	6.4
Sum, rounded to a whole point						49

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	37,841	2492.2	− 2436	56.2	× 938 / 7214	7.3
4	37,842	2540.0	− 2485	55	× 1029 / 7214	7.8
5	37,843	2565.9	− 2528	37.9	× 999 / 7214	5.2
6	37,844	2600.4	− 2552	48.4	× 1042 / 7214	7
7	37,845	2627.9	− 2567	60.9	× 1034 / 7214	8.7
8	37,846	2646.2	− 2586	60.2	× 1043 / 7214	8.7
11	37,847	2663.7	− 2628	35.7	× 1129 / 7214	5.6
Sum, rounded to a whole point						50

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	37,691	2489.1	− 2436	53.1	× 972 / 7563	6.8
4	37,692	2532.9	− 2485	47.9	× 1005 / 7563	6.4
5	37,693	2576.7	− 2528	48.7	× 1109 / 7563	7.1
6	37,694	2617.1	− 2552	65.1	× 1127 / 7563	9.7
7	37,695	2632.3	− 2567	65.3	× 1110 / 7563	9.6
8	37,696	2654.6	− 2586	68.6	× 1072 / 7563	9.7
11	37,697	2672.0	− 2628	44	× 1168 / 7563	6.8
Sum, rounded to a whole point						56

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	37,468	2492.3	− 2436	56.3	× 937 / 7745	6.8
4	37,469	2537.6	− 2485	52.6	× 1007 / 7745	6.8
5	37,470	2570.9	− 2528	42.9	× 1070 / 7745	5.9
6	37,471	2613.0	− 2552	61	× 1216 / 7745	9.6
7	37,472	2651.8	− 2567	84.8	× 1193 / 7745	13.1
8	37,473	2664.1	− 2586	78.1	× 1149 / 7745	11.6
11	37,474	2676.2	− 2628	48.2	× 1173 / 7745	7.3
Sum, rounded to a whole point						61

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	37,452	2485.1	− 2436	49.1	× 955 / 7875	6
4	37,453	2530.8	− 2485	45.8	× 989 / 7875	5.8
5	37,454	2571.5	− 2528	43.5	× 1067 / 7875	5.9
6	37,455	2613.9	− 2552	61.9	× 1208 / 7875	9.5
7	37,456	2650.4	− 2567	83.4	× 1297 / 7875	13.7
8	37,457	2670.6	− 2586	84.6	× 1229 / 7875	13.2
11	37,458	2677.0	− 2628	49	× 1130 / 7875	7
Sum, rounded to a whole point						61

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. 38, 48, 54, 56, 61, 74, 49, 50, 56, 61, 61 → 55.3
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: 6 · 2017→2018: 2 · 2018→2019: 5 · 2019→2021: 13 · 2021→2022: 25 · 2022→2023: 1 · 2023→2024: 6 · 2024→2025: 5 · 2025→2026: 0 → average 7.3
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 7.3 × 2.66 = 19.4. Upper limit 74.7, lower limit 35.9.

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.

Walnut Valley Unified