Washington 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. 2460 vs. 2436.
4th The average 4th grader meets the grade 4 bar. 2526 vs. 2485.
5th The average 5th grader scores 12 points under the grade 5 bar. 2516 vs. 2528.
6th The average 6th grader meets the grade 6 bar. 2585 vs. 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	22,215	2459.1	− 2436	23.1	× 51 / 239	4.9
4	22,217	2462.8	− 2485	−22.2	× 59 / 239	−5.5
5	22,219	2519.6	− 2528	−8.4	× 59 / 239	−2.1
6	22,221	2551.2	− 2552	−0.8	× 70 / 239	−0.2
Sum, rounded to a whole point						−3

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	20,948	2438.5	− 2436	2.5	× 76 / 249	0.8
4	20,950	2476.2	− 2485	−8.8	× 56 / 249	−2
5	20,952	2519.3	− 2528	−8.7	× 58 / 249	−2
6	20,954	2573.2	− 2552	21.2	× 59 / 249	5
Sum, rounded to a whole point						2

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	21,304	2483.6	− 2436	47.6	× 60 / 249	11.5
4	21,306	2454.6	− 2485	−30.4	× 73 / 249	−8.9
5	21,308	2521.6	− 2528	−6.4	× 55 / 249	−1.4
6	21,310	2562.8	− 2552	10.8	× 61 / 249	2.6
Sum, rounded to a whole point						4

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	21,286	2448.0	− 2436	12	× 66 / 249	3.2
4	21,288	2489.4	− 2485	4.4	× 61 / 249	1.1
5	21,290	2518.7	− 2528	−9.3	× 67 / 249	−2.5
6	21,292	2562.5	− 2552	10.5	× 55 / 249	2.3
Sum, rounded to a whole point						4

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	21,456	2454.5	− 2436	18.5	× 64 / 253	4.7
4	21,457	2476.2	− 2485	−8.8	× 67 / 253	−2.3
5	21,458	2562.5	− 2528	34.5	× 59 / 253	8
6	21,459	2578.4	− 2552	26.4	× 63 / 253	6.6
Sum, rounded to a whole point						17

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	21,429	2445.8	− 2436	9.8	× 42 / 199	2.1
4	21,430	2490.1	− 2485	5.1	× 49 / 199	1.3
5	21,431	2526.8	− 2528	−1.2	× 53 / 199	−0.3
6	21,432	2538.3	− 2552	−13.7	× 55 / 199	−3.8
Sum, rounded to a whole point						−1

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	21,402	2462.8	− 2436	26.8	× 51 / 200	6.8
4	21,403	2487.6	− 2485	2.6	× 47 / 200	0.6
5	21,404	2530.2	− 2528	2.2	× 51 / 200	0.6
6	21,405	2570.3	− 2552	18.3	× 51 / 200	4.7
Sum, rounded to a whole point						13

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	21,266	2413.1	− 2436	−22.9	× 52 / 212	−5.6
4	21,267	2482.8	− 2485	−2.2	× 62 / 212	−0.6
5	21,268	2521.7	− 2528	−6.3	× 48 / 212	−1.4
6	21,269	2588.9	− 2552	36.9	× 50 / 212	8.7
Sum, rounded to a whole point						1

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	21,179	2480.3	− 2436	44.3	× 52 / 212	10.9
4	21,180	2474.6	− 2485	−10.4	× 57 / 212	−2.8
5	21,181	2522.9	− 2528	−5.1	× 55 / 212	−1.3
6	21,182	2570.2	− 2552	18.2	× 48 / 212	4.1
Sum, rounded to a whole point						11

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	21,239	2459.7	− 2436	23.7	× 44 / 198	5.3
4	21,240	2525.5	− 2485	40.5	× 52 / 198	10.6
5	21,241	2515.9	− 2528	−12.1	× 54 / 198	−3.3
6	21,242	2584.9	− 2552	32.9	× 48 / 198	8
Sum, rounded to a whole point						21

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −3, 2, 4, 4, 17, −1, 13, 1, 11, 21 → 6.9
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 5 · 2016→2017: 2 · 2017→2018: 0 · 2018→2019: 13 · 2019→2022: 18 · 2022→2023: 14 · 2023→2024: 12 · 2024→2025: 10 · 2025→2026: 10 → average 9.3
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 9.3 × 2.66 = 24.7. Upper limit 31.6, lower limit −17.8.

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.