San Lorenzo Valley Unified: english

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	90,297	2421.9	− 2432	−10.1	× 216 / 1373	−1.6
4	90,300	2477.4	− 2473	4.4	× 197 / 1373	0.6
5	90,301	2509.7	− 2502	7.7	× 221 / 1373	1.2
6	90,304	2540.9	− 2531	9.9	× 193 / 1373	1.4
7	90,305	2576.1	− 2552	24.1	× 214 / 1373	3.8
8	90,308	2589.7	− 2567	22.7	× 169 / 1373	2.8
11	90,309	2624.1	− 2583	41.1	× 163 / 1373	4.9
Sum, rounded to a whole point						13

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	83,778	2428.7	− 2432	−3.3	× 207 / 1372	−0.5
4	83,779	2476.0	− 2473	3	× 207 / 1372	0.5
5	83,782	2530.2	− 2502	28.2	× 200 / 1372	4.1
6	83,784	2538.7	− 2531	7.7	× 222 / 1372	1.2
7	83,785	2581.7	− 2552	29.7	× 178 / 1372	3.9
8	83,788	2580.0	− 2567	13	× 201 / 1372	1.9
11	83,789	2618.9	− 2583	35.9	× 157 / 1372	4.1
Sum, rounded to a whole point						15

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	86,094	2424.2	− 2432	−7.8	× 171 / 1368	−1
4	86,095	2481.5	− 2473	8.5	× 209 / 1368	1.3
5	86,097	2517.4	− 2502	15.4	× 202 / 1368	2.3
6	86,100	2545.9	− 2531	14.9	× 209 / 1368	2.3
7	86,101	2547.8	− 2552	−4.2	× 211 / 1368	−0.6
8	86,103	2584.3	− 2567	17.3	× 176 / 1368	2.2
11	86,105	2666.3	− 2583	83.3	× 190 / 1368	11.6
Sum, rounded to a whole point						18

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	86,325	2449.0	− 2432	17	× 174 / 1332	2.2
4	86,327	2465.8	− 2473	−7.2	× 177 / 1332	−1
5	86,330	2524.9	− 2502	22.9	× 205 / 1332	3.5
6	86,331	2531.8	− 2531	0.8	× 208 / 1332	0.1
7	86,333	2580.9	− 2552	28.9	× 206 / 1332	4.5
8	86,336	2555.4	− 2567	−11.6	× 209 / 1332	−1.8
11	86,337	2668.5	− 2583	85.5	× 153 / 1332	9.8
Sum, rounded to a whole point						17

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	86,917	2453.9	− 2432	21.9	× 190 / 1387	3
4	86,918	2494.6	− 2473	21.6	× 164 / 1387	2.6
5	86,919	2520.5	− 2502	18.5	× 181 / 1387	2.4
6	86,920	2547.5	− 2531	16.5	× 216 / 1387	2.6
7	86,921	2532.4	− 2552	−19.6	× 226 / 1387	−3.2
8	86,922	2585.0	− 2567	18	× 206 / 1387	2.7
11	86,923	2666.2	− 2583	83.2	× 204 / 1387	12.2
Sum, rounded to a whole point						22

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
11	85,127	2648.6	− 2583	65.6	× 113 / 113	65.6
Sum, rounded to a whole point						66

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	87,186	2434.0	− 2432	2	× 160 / 1149	0.3
4	87,187	2473.1	− 2473	0.1	× 195 / 1149	0
5	87,188	2502.9	− 2502	0.9	× 148 / 1149	0.1
6	87,189	2516.1	− 2531	−14.9	× 177 / 1149	−2.3
7	87,190	2558.5	− 2552	6.5	× 160 / 1149	0.9
8	87,191	2574.1	− 2567	7.1	× 149 / 1149	0.9
11	87,192	2641.8	− 2583	58.8	× 160 / 1149	8.2
Sum, rounded to a whole point						8

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	87,110	2433.0	− 2432	1	× 183 / 1203	0.2
4	87,111	2473.8	− 2473	0.8	× 156 / 1203	0.1
5	87,112	2506.2	− 2502	4.2	× 200 / 1203	0.7
6	87,113	2514.7	− 2531	−16.3	× 143 / 1203	−1.9
7	87,114	2540.8	− 2552	−11.2	× 176 / 1203	−1.6
8	87,115	2567.8	− 2567	0.8	× 165 / 1203	0.1
11	87,116	2642.8	− 2583	59.8	× 180 / 1203	8.9
Sum, rounded to a whole point						6

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	87,082	2417.0	− 2432	−15	× 188 / 1238	−2.3
4	87,083	2469.3	− 2473	−3.7	× 178 / 1238	−0.5
5	87,084	2512.3	− 2502	10.3	× 154 / 1238	1.3
6	87,085	2504.3	− 2531	−26.7	× 196 / 1238	−4.2
7	87,086	2543.1	− 2552	−8.9	× 154 / 1238	−1.1
8	87,087	2544.1	− 2567	−22.9	× 175 / 1238	−3.2
11	87,088	2648.2	− 2583	65.2	× 193 / 1238	10.2
Sum, rounded to a whole point						0

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	86,764	2426.5	− 2432	−5.5	× 170 / 1192	−0.8
4	86,765	2471.8	− 2473	−1.2	× 181 / 1192	−0.2
5	86,766	2518.8	− 2502	16.8	× 175 / 1192	2.5
6	86,767	2526.0	− 2531	−5	× 153 / 1192	−0.6
7	86,768	2549.2	− 2552	−2.8	× 201 / 1192	−0.5
8	86,769	2563.0	− 2567	−4	× 153 / 1192	−0.5
11	86,770	2637.2	− 2583	54.2	× 159 / 1192	7.2
Sum, rounded to a whole point						7

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. 13, 15, 18, 17, 22, 66, 8, 6, 0, 7 → 17.2
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 2 · 2016→2017: 3 · 2017→2018: 1 · 2018→2019: 5 · 2019→2021: 44 · 2021→2022: 58 · 2022→2023: 2 · 2023→2024: 6 · 2024→2025: 7 → average 14.2
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 14.2 × 2.66 = 37.8. Upper limit 55, lower limit −20.6.

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.