Webster 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.

All students

3rd The average 3rd grader scores 15 points under the grade 3 bar. 2421 vs. 2436.
4th The average 4th grader scores 27 points under the grade 4 bar. 2458 vs. 2485.
5th The average 5th grader scores 41 points under the grade 5 bar. 2487 vs. 2528.

Students fluent in English

Math with English out of the way. Includes students who have only ever spoken English.

Grade bars 3rd 51 students Just under the grade 3 bar. 4th 46 students Meets the grade 4 bar.

English learners

Students leave this group as they become fluent, so its average stays low even where they learn well.

Grade bars 3rd 13 students 39 points under the grade 3 bar. 4th 24 students 37 points under the grade 3 bar.

the group's average that grade's own bar the distance between

2026 results. "Meets standard" is the state's mark for being on track for that grade. The state leaves out any group of ten students or fewer, so a grade may be missing from the charts.

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	26,148	2399.8	− 2436	−36.2	× 86 / 239	−13
4	26,149	2445.0	− 2485	−40	× 80 / 239	−13.4
5	26,152	2455.7	− 2528	−72.3	× 73 / 239	−22.1
Sum, rounded to a whole point						−48

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	24,388	2408.2	− 2436	−27.8	× 85 / 242	−9.8
4	24,389	2441.4	− 2485	−43.6	× 77 / 242	−13.9
5	24,391	2482.9	− 2528	−45.1	× 80 / 242	−14.9
Sum, rounded to a whole point						−39

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	24,888	2438.1	− 2436	2.1	× 88 / 250	0.7
4	24,891	2465.5	− 2485	−19.5	× 84 / 250	−6.6
5	24,893	2455.7	− 2528	−72.3	× 78 / 250	−22.6
Sum, rounded to a whole point						−28

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	24,912	2447.5	− 2436	11.5	× 75 / 246	3.5
4	24,914	2459.8	− 2485	−25.2	× 91 / 246	−9.3
5	24,916	2467.6	− 2528	−60.4	× 80 / 246	−19.6
Sum, rounded to a whole point						−25

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	25,081	2456.4	− 2436	20.4	× 98 / 257	7.8
4	25,082	2479.4	− 2485	−5.6	× 78 / 257	−1.7
5	25,083	2487.5	− 2528	−40.5	× 81 / 257	−12.8
Sum, rounded to a whole point						−7

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	24,360	2378.7	− 2436	−57.3	× 87 / 250	−19.9
4	24,361	2434.0	− 2485	−51	× 70 / 250	−14.3
5	24,362	2454.7	− 2528	−73.3	× 93 / 250	−27.3
Sum, rounded to a whole point						−61

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	25,028	2387.3	− 2436	−48.7	× 66 / 220	−14.6
4	25,029	2437.1	− 2485	−47.9	× 90 / 220	−19.6
5	25,030	2453.5	− 2528	−74.5	× 64 / 220	−21.7
Sum, rounded to a whole point						−56

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	24,977	2399.3	− 2436	−36.7	× 71 / 224	−11.6
4	24,978	2436.3	− 2485	−48.7	× 65 / 224	−14.1
5	24,979	2444.5	− 2528	−83.5	× 88 / 224	−32.8
Sum, rounded to a whole point						−59

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	24,829	2413.1	− 2436	−22.9	× 69 / 198	−8
4	24,830	2442.8	− 2485	−42.2	× 68 / 198	−14.5
5	24,831	2449.1	− 2528	−78.9	× 61 / 198	−24.3
Sum, rounded to a whole point						−47

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	24,718	2403.9	− 2436	−32.1	× 71 / 208	−11
4	24,719	2481.7	− 2485	−3.3	× 70 / 208	−1.1
5	24,720	2454.3	− 2528	−73.7	× 67 / 208	−23.7
Sum, rounded to a whole point						−36

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	24,746	2421.3	− 2436	−14.7	× 64 / 201	−4.7
4	24,747	2458.1	− 2485	−26.9	× 70 / 201	−9.4
5	24,748	2486.8	− 2528	−41.2	× 67 / 201	−13.7
Sum, rounded to a whole point						−28

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −48, −39, −28, −25, −7, −61, −56, −59, −47, −36, −28 → −39.5
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 9 · 2016→2017: 11 · 2017→2018: 3 · 2018→2019: 18 · 2019→2021: 54 · 2021→2022: 5 · 2022→2023: 3 · 2023→2024: 12 · 2024→2025: 11 · 2025→2026: 8 → average 13.4
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 13.4 × 2.66 = 35.6. Upper limit −3.9, lower limit −75.1.

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.