La Canada Elementary: english

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	85,102	2369.0	− 2432	−63	× 105 / 402	−16.5
4	85,103	2416.1	− 2473	−56.9	× 115 / 402	−16.3
5	85,106	2445.1	− 2502	−56.9	× 88 / 402	−12.5
6	85,107	2511.8	− 2531	−19.2	× 94 / 402	−4.5
Sum, rounded to a whole point						−50

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	78,928	2406.5	− 2432	−25.5	× 94 / 374	−6.4
4	78,930	2444.4	− 2473	−28.6	× 93 / 374	−7.1
5	78,933	2488.8	− 2502	−13.2	× 105 / 374	−3.7
6	78,934	2531.2	− 2531	0.2	× 82 / 374	0
Sum, rounded to a whole point						−17

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	81,085	2419.1	− 2432	−12.9	× 59 / 353	−2.2
4	81,087	2465.6	− 2473	−7.4	× 95 / 353	−2
5	81,090	2481.1	− 2502	−20.9	× 95 / 353	−5.6
6	81,091	2530.3	− 2531	−0.7	× 104 / 353	−0.2
Sum, rounded to a whole point						−10

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	81,234	2440.6	− 2432	8.6	× 89 / 348	2.2
4	81,237	2444.7	− 2473	−28.3	× 70 / 348	−5.7
5	81,238	2516.8	− 2502	14.8	× 97 / 348	4.1
6	81,241	2521.9	− 2531	−9.1	× 92 / 348	−2.4
Sum, rounded to a whole point						−2

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	81,763	2419.6	− 2432	−12.4	× 80 / 334	−3
4	81,764	2466.4	− 2473	−6.6	× 88 / 334	−1.7
5	81,765	2492.6	− 2502	−9.4	× 73 / 334	−2.1
6	81,766	2551.7	− 2531	20.7	× 93 / 334	5.8
Sum, rounded to a whole point						−1

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	81,984	2365.1	− 2432	−66.9	× 91 / 331	−18.4
4	81,985	2443.8	− 2473	−29.2	× 81 / 331	−7.1
5	81,986	2477.9	− 2502	−24.1	× 87 / 331	−6.3
6	81,987	2511.5	− 2531	−19.5	× 72 / 331	−4.2
Sum, rounded to a whole point						−36

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	81,944	2375.6	− 2432	−56.4	× 83 / 342	−13.7
4	81,945	2405.1	− 2473	−67.9	× 90 / 342	−17.9
5	81,946	2477.0	− 2502	−25	× 77 / 342	−5.6
6	81,947	2512.9	− 2531	−18.1	× 92 / 342	−4.9
Sum, rounded to a whole point						−42

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	81,956	2367.6	− 2432	−64.4	× 83 / 323	−16.5
4	81,957	2408.3	− 2473	−64.7	× 82 / 323	−16.4
5	81,958	2437.4	− 2502	−64.6	× 82 / 323	−16.4
6	81,959	2480.8	− 2531	−50.2	× 76 / 323	−11.8
Sum, rounded to a whole point						−61

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	81,628	2381.0	− 2432	−51	× 65 / 304	−10.9
4	81,629	2395.3	− 2473	−77.7	× 79 / 304	−20.2
5	81,630	2454.8	− 2502	−47.2	× 76 / 304	−11.8
6	81,631	2472.0	− 2531	−59	× 84 / 304	−16.3
Sum, rounded to a whole point						−59

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −50, −17, −10, −2, −1, −36, −42, −61, −59 → −30.9
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 33 · 2016→2017: 7 · 2017→2018: 8 · 2018→2019: 1 · 2019→2022: 35 · 2022→2023: 6 · 2023→2024: 19 · 2024→2025: 2 → average 13.9
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 13.9 × 2.66 = 37. Upper limit 6.1, lower limit −67.9.

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. From 2014–15, 2015–16, 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.