Barbara Benson 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 5.

3rd The average 3rd grader scores just under the grade 3 bar. 2429 vs. 2436.
4th The average 4th grader scores 28 points under the grade 4 bar. 2457 vs. 2485.
5th The average 5th grader meets the grade 5 bar. 2541 vs. 2528.

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	52,886	2449.5	− 2436	13.5	× 49 / 164	4
4	52,888	2486.9	− 2485	1.9	× 64 / 164	0.7
5	52,890	2509.6	− 2528	−18.4	× 51 / 164	−5.7
Sum, rounded to a whole point						−1

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	49,143	2445.4	− 2436	9.4	× 48 / 159	2.8
4	49,145	2471.2	− 2485	−13.8	× 50 / 159	−4.3
5	49,148	2533.3	− 2528	5.3	× 61 / 159	2
Sum, rounded to a whole point						1

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,486	2434.6	− 2436	−1.4	× 52 / 144	−0.5
4	50,487	2456.1	− 2485	−28.9	× 49 / 144	−9.8
5	50,489	2508.0	− 2528	−20	× 43 / 144	−6
Sum, rounded to a whole point						−16

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,508	2425.4	− 2436	−10.6	× 46 / 152	−3.2
4	50,510	2471.2	− 2485	−13.8	× 52 / 152	−4.7
5	50,512	2504.0	− 2528	−24	× 54 / 152	−8.5
Sum, rounded to a whole point						−16

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,708	2427.2	− 2436	−8.8	× 48 / 142	−3
4	50,709	2462.5	− 2485	−22.5	× 40 / 142	−6.3
5	50,710	2537.7	− 2528	9.7	× 54 / 142	3.7
Sum, rounded to a whole point						−6

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,610	2419.8	− 2436	−16.2	× 49 / 145	−5.5
4	50,611	2438.8	− 2485	−46.2	× 44 / 145	−14
5	50,612	2515.4	− 2528	−12.6	× 52 / 145	−4.5
Sum, rounded to a whole point						−24

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,566	2429.7	− 2436	−6.3	× 44 / 128	−2.2
4	50,567	2483.0	− 2485	−2	× 44 / 128	−0.7
5	50,568	2514.4	− 2528	−13.6	× 40 / 128	−4.3
Sum, rounded to a whole point						−7

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,421	2433.5	− 2436	−2.5	× 41 / 128	−0.8
4	50,422	2478.8	− 2485	−6.2	× 41 / 128	−2
5	50,423	2525.1	− 2528	−2.9	× 46 / 128	−1
Sum, rounded to a whole point						−4

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,179	2404.1	− 2436	−31.9	× 38 / 114	−10.6
4	50,180	2488.9	− 2485	3.9	× 34 / 114	1.2
5	50,181	2513.3	− 2528	−14.7	× 42 / 114	−5.4
Sum, rounded to a whole point						−15

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,046	2429.4	− 2436	−6.6	× 38 / 114	−2.2
4	50,047	2456.8	− 2485	−28.2	× 41 / 114	−10.1
5	50,048	2540.7	− 2528	12.7	× 35 / 114	3.9
Sum, rounded to a whole point						−8

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −1, 1, −16, −16, −6, −24, −7, −4, −15, −8 → −9.6
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 2 · 2016→2017: 17 · 2017→2018: 0 · 2018→2019: 10 · 2019→2022: 18 · 2022→2023: 17 · 2023→2024: 3 · 2024→2025: 11 · 2025→2026: 7 → average 9.4
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 9.4 × 2.66 = 25. Upper limit 15.4, lower limit −34.6.

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