Buena Vista 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.

Measured against the grade bars

The state's math test uses one scale for every grade, so a score means the same thing in grade 3 as in grade 6.

3rd The average 3rd grader meets the grade 3 bar. 2440 vs. 2436.
4th The average 4th grader scores just under the grade 3 bar. 2433 vs. 2436. The 4th-grade bar is 2485.
5th The average 5th grader scores just under the grade 4 bar. 2476 vs. 2485. The 5th-grade bar is 2528.
6th The average 6th grader scores 11 points under the grade 5 bar. 2518 vs. 2528. The 6th-grade bar is 2552.

2026 results. "Meets standard" is the state's mark for being on track for that grade.

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	85,072	2422.4	− 2436	−13.6	× 109 / 395	−3.8
4	85,073	2446.8	− 2485	−38.2	× 78 / 395	−7.5
5	85,076	2501.0	− 2528	−27	× 105 / 395	−7.2
6	85,077	2513.3	− 2552	−38.7	× 103 / 395	−10.1
Sum, rounded to a whole point						−29

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	78,898	2416.6	− 2436	−19.4	× 76 / 360	−4.1
4	78,901	2475.6	− 2485	−9.4	× 99 / 360	−2.6
5	78,902	2479.9	− 2528	−48.1	× 85 / 360	−11.4
6	78,904	2524.1	− 2552	−27.9	× 100 / 360	−7.8
Sum, rounded to a whole point						−26

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	81,055	2434.8	− 2436	−1.2	× 79 / 351	−0.3
4	81,058	2455.2	− 2485	−29.8	× 85 / 351	−7.2
5	81,059	2494.3	− 2528	−33.7	× 109 / 351	−10.5
6	81,061	2504.4	− 2552	−47.6	× 78 / 351	−10.6
Sum, rounded to a whole point						−29

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	81,204	2426.8	− 2436	−9.2	× 97 / 352	−2.5
4	81,207	2469.5	− 2485	−15.5	× 71 / 352	−3.1
5	81,208	2483.3	− 2528	−44.7	× 79 / 352	−10
6	81,211	2533.6	− 2552	−18.4	× 105 / 352	−5.5
Sum, rounded to a whole point						−21

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	81,738	2445.3	− 2436	9.3	× 91 / 332	2.5
4	81,739	2462.1	− 2485	−22.9	× 95 / 332	−6.6
5	81,740	2503.6	− 2528	−24.4	× 69 / 332	−5.1
6	81,741	2526.7	− 2552	−25.3	× 77 / 332	−5.9
Sum, rounded to a whole point						−15

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	81,959	2462.6	− 2436	26.6	× 47 / 281	4.4
4	81,960	2465.3	− 2485	−19.7	× 79 / 281	−5.5
5	81,961	2446.1	− 2528	−81.9	× 72 / 281	−21
6	81,962	2526.4	− 2552	−25.6	× 83 / 281	−7.6
Sum, rounded to a whole point						−30

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	81,919	2436.0	− 2436	0	× 59 / 268	0
4	81,920	2479.7	− 2485	−5.3	× 55 / 268	−1.1
5	81,921	2464.8	− 2528	−63.2	× 80 / 268	−18.9
6	81,922	2508.9	− 2552	−43.1	× 74 / 268	−11.9
Sum, rounded to a whole point						−32

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	81,931	2429.1	− 2436	−6.9	× 73 / 282	−1.8
4	81,932	2478.5	− 2485	−6.5	× 63 / 282	−1.5
5	81,933	2480.3	− 2528	−47.7	× 59 / 282	−10
6	81,934	2507.2	− 2552	−44.8	× 87 / 282	−13.8
Sum, rounded to a whole point						−27

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	81,603	2423.5	− 2436	−12.5	× 76 / 256	−3.7
4	81,604	2457.2	− 2485	−27.8	× 67 / 256	−7.3
5	81,605	2490.0	− 2528	−38	× 55 / 256	−8.2
6	81,606	2511.0	− 2552	−41	× 58 / 256	−9.3
Sum, rounded to a whole point						−28

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	81,525	2440.1	− 2436	4.1	× 67 / 278	1
4	81,526	2433.4	− 2485	−51.6	× 77 / 278	−14.3
5	81,527	2476.2	− 2528	−51.8	× 72 / 278	−13.4
6	81,528	2517.5	− 2552	−34.5	× 62 / 278	−7.7
Sum, rounded to a whole point						−34

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −29, −26, −29, −21, −15, −30, −32, −27, −28, −34 → −27.1
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 3 · 2016→2017: 3 · 2017→2018: 8 · 2018→2019: 6 · 2019→2022: 15 · 2022→2023: 2 · 2023→2024: 5 · 2024→2025: 1 · 2025→2026: 6 → average 5.4
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 5.4 × 2.66 = 14.4. Upper limit −12.7, lower limit −41.5.

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.