Lakeside Union Elementary: 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	18,988	2334.4	− 2436	−101.6	× 32 / 202	−16.1
4	18,991	2369.3	− 2485	−115.7	× 35 / 202	−20
5	18,992	2422.6	− 2528	−105.4	× 29 / 202	−15.1
6	18,995	2417.1	− 2552	−134.9	× 45 / 202	−30.1
7	18,996	2524.2	− 2567	−42.8	× 29 / 202	−6.1
8	18,999	2549.6	− 2586	−36.4	× 32 / 202	−5.8
Sum, rounded to a whole point						−93

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	17,998	2389.2	− 2436	−46.8	× 29 / 202	−6.7
4	18,000	2374.2	− 2485	−110.8	× 39 / 202	−21.4
5	18,001	2415.3	− 2528	−112.7	× 32 / 202	−17.9
6	18,004	2472.3	− 2552	−79.7	× 32 / 202	−12.6
7	18,005	2489.4	− 2567	−77.6	× 39 / 202	−15
8	18,008	2538.7	− 2586	−47.3	× 31 / 202	−7.3
Sum, rounded to a whole point						−81

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	18,331	2395.1	− 2436	−40.9	× 45 / 224	−8.2
4	18,334	2396.5	− 2485	−88.5	× 29 / 224	−11.5
5	18,335	2404.3	− 2528	−123.7	× 41 / 224	−22.6
6	18,337	2464.6	− 2552	−87.4	× 29 / 224	−11.3
7	18,340	2528.1	− 2567	−38.9	× 34 / 224	−5.9
8	18,342	2495.0	− 2586	−91	× 46 / 224	−18.7
Sum, rounded to a whole point						−78

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	18,360	2378.4	− 2436	−57.6	× 39 / 213	−10.5
4	18,363	2406.3	− 2485	−78.7	× 44 / 213	−16.3
5	18,364	2429.8	− 2528	−98.2	× 28 / 213	−12.9
6	18,367	2453.6	− 2552	−98.4	× 45 / 213	−20.8
7	18,368	2462.7	− 2567	−104.3	× 26 / 213	−12.7
8	18,371	2622.6	− 2586	36.6	× 31 / 213	5.3
Sum, rounded to a whole point						−68

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	18,504	2412.6	− 2436	−23.4	× 32 / 210	−3.6
4	18,505	2416.6	− 2485	−68.4	× 38 / 210	−12.4
5	18,506	2436.4	− 2528	−91.6	× 42 / 210	−18.3
6	18,507	2444.1	− 2552	−107.9	× 27 / 210	−13.9
7	18,508	2463.5	− 2567	−103.5	× 48 / 210	−23.7
8	18,509	2489.5	− 2586	−96.5	× 23 / 210	−10.6
Sum, rounded to a whole point						−82

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	18,051	2382.9	− 2436	−53.1	× 31 / 157	−10.5
4	18,052	2380.9	− 2485	−104.1	× 33 / 157	−21.9
5	18,053	2431.5	− 2528	−96.5	× 26 / 157	−16
6	18,054	2400.5	− 2552	−151.5	× 22 / 157	−21.2
7	18,055	2446.2	− 2567	−120.8	× 23 / 157	−17.7
8	18,056	2457.6	− 2586	−128.4	× 22 / 157	−18
Sum, rounded to a whole point						−105

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	18,539	2375.1	− 2436	−60.9	× 16 / 168	−5.8
4	18,540	2399.9	− 2485	−85.1	× 28 / 168	−14.2
5	18,541	2453.5	− 2528	−74.5	× 31 / 168	−13.7
6	18,542	2446.6	− 2552	−105.4	× 26 / 168	−16.3
7	18,543	2458.3	− 2567	−108.7	× 32 / 168	−20.7
8	18,544	2515.0	− 2586	−71	× 35 / 168	−14.8
Sum, rounded to a whole point						−86

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	18,482	2397.5	− 2436	−38.5	× 29 / 174	−6.4
4	18,483	2407.9	− 2485	−77.1	× 17 / 174	−7.5
5	18,484	2434.9	− 2528	−93.1	× 29 / 174	−15.5
6	18,485	2439.6	− 2552	−112.4	× 34 / 174	−22
7	18,486	2484.6	− 2567	−82.4	× 30 / 174	−14.2
8	18,487	2465.8	− 2586	−120.2	× 35 / 174	−24.2
Sum, rounded to a whole point						−90

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	18,441	2387.5	− 2436	−48.5	× 22 / 163	−6.5
4	18,442	2410.9	− 2485	−74.1	× 34 / 163	−15.5
5	18,443	2402.8	− 2528	−125.2	× 18 / 163	−13.8
6	18,444	2467.8	− 2552	−84.2	× 27 / 163	−13.9
7	18,445	2481.8	− 2567	−85.2	× 31 / 163	−16.2
8	18,446	2492.2	− 2586	−93.8	× 31 / 163	−17.8
Sum, rounded to a whole point						−84

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	18,435	2373.4	− 2436	−62.6	× 20 / 162	−7.7
4	18,436	2427.0	− 2485	−58	× 25 / 162	−9
5	18,437	2431.1	− 2528	−96.9	× 32 / 162	−19.1
6	18,438	2433.8	− 2552	−118.2	× 18 / 162	−13.1
7	18,439	2504.5	− 2567	−62.5	× 33 / 162	−12.7
8	18,440	2502.3	− 2586	−83.7	× 34 / 162	−17.6
Sum, rounded to a whole point						−79

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	18,474	2350.9	− 2436	−85.1	× 24 / 157	−13
4	18,475	2374.3	− 2485	−110.7	× 22 / 157	−15.5
5	18,476	2414.8	− 2528	−113.2	× 24 / 157	−17.3
6	18,477	2422.8	− 2552	−129.2	× 31 / 157	−25.5
7	18,478	2467.3	− 2567	−99.7	× 23 / 157	−14.6
8	18,479	2487.0	− 2586	−99	× 33 / 157	−20.8
Sum, rounded to a whole point						−107

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −93, −81, −78, −68, −82, −105, −86, −90, −84, −79, −107 → −86.6
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 12 · 2016→2017: 3 · 2017→2018: 10 · 2018→2019: 14 · 2019→2021: 23 · 2021→2022: 19 · 2022→2023: 4 · 2023→2024: 6 · 2024→2025: 5 · 2025→2026: 28 → average 12.4
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 12.4 × 2.66 = 33. Upper limit −53.6, lower limit −119.6.

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.

Schools in Lakeside Union Elementary

K–8 schools

Lakeside Elementary