Cerra Vista 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	63,848	2408.2	− 2432	−23.8	× 127 / 336	−9
4	63,851	2458.3	− 2473	−14.7	× 100 / 336	−4.4
5	63,852	2467.8	− 2502	−34.2	× 109 / 336	−11.1
Sum, rounded to a whole point						−24

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	59,219	2431.8	− 2432	−0.2	× 99 / 316	−0.1
4	59,222	2459.9	− 2473	−13.1	× 114 / 316	−4.7
5	59,223	2516.2	− 2502	14.2	× 103 / 316	4.6
Sum, rounded to a whole point						0

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	60,954	2420.8	− 2432	−11.2	× 108 / 321	−3.8
4	60,957	2489.0	− 2473	16	× 94 / 321	4.7
5	60,959	2500.3	− 2502	−1.7	× 119 / 321	−0.6
Sum, rounded to a whole point						0

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	61,074	2441.7	− 2432	9.7	× 106 / 316	3.3
4	61,075	2469.5	− 2473	−3.5	× 100 / 316	−1.1
5	61,078	2512.0	− 2502	10	× 110 / 316	3.5
Sum, rounded to a whole point						6

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	61,308	2426.9	− 2432	−5.1	× 85 / 299	−1.4
4	61,309	2453.2	− 2473	−19.8	× 108 / 299	−7.2
5	61,310	2489.0	− 2502	−13	× 106 / 299	−4.6
Sum, rounded to a whole point						−13

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	61,411	2392.3	− 2432	−39.7	× 81 / 314	−10.2
4	61,412	2460.2	− 2473	−12.8	× 91 / 314	−3.7
5	61,413	2448.5	− 2502	−53.5	× 90 / 314	−15.3
6	61,414	2517.6	− 2531	−13.4	× 27 / 314	−1.2
7	61,415	2505.6	− 2552	−46.4	× 25 / 314	−3.7
Sum, rounded to a whole point						−34

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	61,359	2380.0	− 2432	−52	× 71 / 318	−11.6
4	61,360	2478.3	− 2473	5.3	× 84 / 318	1.4
5	61,361	2483.1	− 2502	−18.9	× 87 / 318	−5.2
6	61,362	2542.1	− 2531	11.1	× 30 / 318	1
7	61,363	2523.6	− 2552	−28.4	× 25 / 318	−2.2
8	61,364	2502.3	− 2567	−64.7	× 21 / 318	−4.3
Sum, rounded to a whole point						−21

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	61,300	2366.2	− 2432	−65.8	× 80 / 325	−16.2
4	61,301	2448.0	− 2473	−25	× 84 / 325	−6.5
5	61,302	2473.5	− 2502	−28.5	× 88 / 325	−7.7
6	61,303	2488.1	− 2531	−42.9	× 25 / 325	−3.3
7	61,304	2533.5	− 2552	−18.5	× 25 / 325	−1.4
8	61,305	2540.8	− 2567	−26.2	× 23 / 325	−1.9
Sum, rounded to a whole point						−37

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	61,051	2402.0	− 2432	−30	× 100 / 277	−10.8
4	61,052	2458.3	− 2473	−14.7	× 87 / 277	−4.6
5	61,053	2481.4	− 2502	−20.6	× 90 / 277	−6.7
Sum, rounded to a whole point						−22

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −24, 0, 0, 6, −13, −34, −21, −37, −22 → −16.1
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 24 · 2016→2017: 0 · 2017→2018: 6 · 2018→2019: 19 · 2019→2022: 21 · 2022→2023: 13 · 2023→2024: 16 · 2024→2025: 15 → average 14.3
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 14.3 × 2.66 = 38. Upper limit 21.9, lower limit −54.1.

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.