Laurel Elementary: math

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	30,922	2403.1	− 2436	−32.9	× 50 / 222	−7.4
4	30,923	2474.1	− 2485	−10.9	× 24 / 222	−1.2
5	30,926	2473.1	− 2528	−54.9	× 26 / 222	−6.4
6	30,927	2497.0	− 2552	−55	× 45 / 222	−11.1
7	30,930	2512.7	− 2567	−54.3	× 35 / 222	−8.6
8	30,931	2542.6	− 2586	−43.4	× 42 / 222	−8.2
Sum, rounded to a whole point						−43

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	29,139	2396.5	− 2436	−39.5	× 18 / 211	−3.4
4	29,141	2465.6	− 2485	−19.4	× 47 / 211	−4.3
5	29,143	2518.9	− 2528	−9.1	× 23 / 211	−1
6	29,146	2476.5	− 2552	−75.5	× 33 / 211	−11.8
7	29,147	2504.8	− 2567	−62.2	× 52 / 211	−15.3
8	29,150	2500.4	− 2586	−85.6	× 38 / 211	−15.4
Sum, rounded to a whole point						−51

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	29,705	2358.3	− 2436	−77.7	× 19 / 215	−6.9
4	29,706	2421.5	− 2485	−63.5	× 17 / 215	−5
5	29,708	2487.8	− 2528	−40.2	× 42 / 215	−7.9
6	29,711	2464.4	− 2552	−87.6	× 46 / 215	−18.7
7	29,713	2495.6	− 2567	−71.4	× 44 / 215	−14.6
8	29,715	2519.1	− 2586	−66.9	× 47 / 215	−14.6
Sum, rounded to a whole point						−68

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	29,754	2379.7	− 2436	−56.3	× 27 / 191	−8
4	29,756	2367.4	− 2485	−117.6	× 17 / 191	−10.5
5	29,758	2435.5	− 2528	−92.5	× 15 / 191	−7.3
6	29,760	2497.0	− 2552	−55	× 45 / 191	−13
7	29,762	2532.4	− 2567	−34.6	× 46 / 191	−8.3
8	29,764	2516.1	− 2586	−69.9	× 41 / 191	−15
Sum, rounded to a whole point						−62

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	29,932	2355.3	− 2436	−80.7	× 24 / 186	−10.4
4	29,933	2406.1	− 2485	−78.9	× 22 / 186	−9.3
5	29,934	2399.2	− 2528	−128.8	× 21 / 186	−14.5
6	29,935	2473.3	− 2552	−78.7	× 29 / 186	−12.3
7	29,936	2511.2	− 2567	−55.8	× 47 / 186	−14.1
8	29,937	2519.6	− 2586	−66.4	× 43 / 186	−15.4
Sum, rounded to a whole point						−76

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	29,967	2439.8	− 2436	3.8	× 18 / 171	0.4
4	29,968	2415.5	− 2485	−69.5	× 20 / 171	−8.1
5	29,969	2456.6	− 2528	−71.4	× 29 / 171	−12.1
6	29,970	2418.1	− 2552	−133.9	× 38 / 171	−29.8
7	29,971	2461.2	− 2567	−105.8	× 38 / 171	−23.5
8	29,972	2414.7	− 2586	−171.3	× 28 / 171	−28
Sum, rounded to a whole point						−101

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	30,024	2445.9	− 2436	9.9	× 17 / 182	0.9
4	30,025	2451.1	− 2485	−33.9	× 19 / 182	−3.5
5	30,026	2485.8	− 2528	−42.2	× 20 / 182	−4.6
6	30,027	2470.9	− 2552	−81.1	× 55 / 182	−24.5
7	30,028	2483.4	− 2567	−83.6	× 31 / 182	−14.2
8	30,029	2464.0	− 2586	−122	× 40 / 182	−26.8
Sum, rounded to a whole point						−73

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	29,890	2406.6	− 2436	−29.4	× 19 / 187	−3
4	29,891	2492.5	− 2485	7.5	× 17 / 187	0.7
5	29,892	2450.6	− 2528	−77.4	× 20 / 187	−8.3
6	29,893	2468.6	− 2552	−83.4	× 50 / 187	−22.3
7	29,894	2514.1	− 2567	−52.9	× 52 / 187	−14.7
8	29,895	2511.3	− 2586	−74.7	× 29 / 187	−11.6
Sum, rounded to a whole point						−59

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	29,751	2401.9	− 2436	−34.1	× 17 / 203	−2.9
4	29,752	2436.4	− 2485	−48.6	× 22 / 203	−5.3
5	29,753	2515.2	− 2528	−12.8	× 19 / 203	−1.2
6	29,754	2489.3	− 2552	−62.7	× 47 / 203	−14.5
7	29,755	2497.3	− 2567	−69.7	× 52 / 203	−17.9
8	29,756	2534.8	− 2586	−51.2	× 46 / 203	−11.6
Sum, rounded to a whole point						−53

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −43, −51, −68, −62, −76, −101, −73, −59, −53 → −65.1
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: 17 · 2017→2018: 6 · 2018→2019: 14 · 2019→2022: 25 · 2022→2023: 28 · 2023→2024: 14 · 2024→2025: 6 → average 14.8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 14.8 × 2.66 = 39.4. Upper limit −25.7, lower limit −104.5.

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.