Rocketship Mosaic 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.

Measured against the grade bars

The state's English test uses one scale for every grade, so a score means the same thing in grade 3 as in grade 5.

Many students here are still learning English, and this test is given in English. In 2026, 100 of the 246 students who took the English Language Arts test were English learners.

All students

3rd The average 3rd grader meets the grade 3 bar. 2463 vs. 2432.
4th The average 4th grader meets the grade 4 bar. 2481 vs. 2473.
5th The average 5th grader meets the grade 5 bar. 2532 vs. 2502.

Students fluent in English

The closest these results come to reading alone: English is not in the way. Includes students who have only ever spoken English.

Grade bars 3rd 67 students Meets the grade 3 bar. 4th 56 students Meets the grade 4 bar. 5th 23 students Meets the grade 5 bar.

English learners

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

Grade bars 3rd 49 students 17 points under the grade 3 bar. 4th 37 students 28 points under the grade 3 bar. 5th 14 students 26 points under the grade 5 bar.

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

2026 results. The English test covers reading, writing, listening and research together. "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	87,178	2412.2	− 2432	−19.8	× 132 / 279	−9.4
4	87,179	2462.2	− 2473	−10.8	× 110 / 279	−4.3
5	87,182	2478.7	− 2502	−23.3	× 37 / 279	−3.1
Sum, rounded to a whole point						−17

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	80,907	2421.5	− 2432	−10.5	× 110 / 256	−4.5
4	80,909	2466.9	− 2473	−6.1	× 112 / 256	−2.7
5	80,911	2517.6	− 2502	15.6	× 34 / 256	2.1
Sum, rounded to a whole point						−5

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	83,135	2424.5	− 2432	−7.5	× 109 / 249	−3.3
4	83,138	2490.5	− 2473	17.5	× 102 / 249	7.2
5	83,139	2491.1	− 2502	−10.9	× 38 / 249	−1.7
Sum, rounded to a whole point						2

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	83,355	2447.7	− 2432	15.7	× 96 / 235	6.4
4	83,357	2512.1	− 2473	39.1	× 110 / 235	18.3
5	83,359	2525.2	− 2502	23.2	× 29 / 235	2.9
Sum, rounded to a whole point						28

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	83,965	2463.8	− 2432	31.8	× 108 / 245	14
4	83,966	2486.6	− 2473	13.6	× 95 / 245	5.3
5	83,967	2541.3	− 2502	39.3	× 42 / 245	6.7
Sum, rounded to a whole point						26

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	84,126	2433.8	− 2432	1.8	× 105 / 235	0.8
4	84,127	2487.9	− 2473	14.9	× 103 / 235	6.5
5	84,128	2526.0	− 2502	24	× 27 / 235	2.8
Sum, rounded to a whole point						10

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	84,067	2446.4	− 2432	14.4	× 107 / 253	6.1
4	84,068	2483.3	− 2473	10.3	× 108 / 253	4.4
5	84,069	2514.1	− 2502	12.1	× 38 / 253	1.8
Sum, rounded to a whole point						12

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	84,068	2466.8	− 2432	34.8	× 100 / 235	14.8
4	84,069	2475.1	− 2473	2.1	× 105 / 235	0.9
5	84,070	2494.6	− 2502	−7.4	× 30 / 235	−0.9
Sum, rounded to a whole point						15

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	83,750	2459.8	− 2432	27.8	× 96 / 229	11.7
4	83,751	2508.9	− 2473	35.9	× 102 / 229	16
5	83,752	2473.0	− 2502	−29	× 31 / 229	−3.9
Sum, rounded to a whole point						24

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	83,557	2462.9	− 2432	30.9	× 116 / 246	14.6
4	83,558	2480.9	− 2473	7.9	× 93 / 246	3
5	83,559	2531.9	− 2502	29.9	× 37 / 246	4.5
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. −17, −5, 2, 28, 26, 10, 12, 15, 24, 22 → 11.7
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 12 · 2016→2017: 7 · 2017→2018: 26 · 2018→2019: 2 · 2019→2022: 16 · 2022→2023: 2 · 2023→2024: 3 · 2024→2025: 9 · 2025→2026: 2 → average 8.8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 8.8 × 2.66 = 23.4. Upper limit 35.1, lower limit −11.7.

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.