Twin Oaks 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 13 points under the grade 3 bar. 2423 vs. 2436.
4th The average 4th grader scores 42 points under the grade 4 bar. 2443 vs. 2485.
5th The average 5th grader scores 33 points under the grade 5 bar. 2495 vs. 2528.

Students fluent in English

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

Grade bars 3rd 80 students Meets the grade 3 bar. 4th 60 students 20 points under the grade 4 bar. 5th 69 students 15 points under 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 17 students 90 points under the grade 3 bar. 4th 22 students 53 points under the grade 3 bar. 5th 20 students Just 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	77,239	2409.0	− 2436	−27	× 97 / 322	−8.1
4	77,240	2466.7	− 2485	−18.3	× 105 / 322	−6
5	77,242	2503.6	− 2528	−24.4	× 120 / 322	−9.1
Sum, rounded to a whole point						−23

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	71,549	2419.2	− 2436	−16.8	× 95 / 298	−5.4
4	71,550	2466.5	− 2485	−18.5	× 98 / 298	−6.1
5	71,553	2513.4	− 2528	−14.6	× 105 / 298	−5.1
Sum, rounded to a whole point						−17

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	73,442	2414.6	− 2436	−21.4	× 98 / 293	−7.2
4	73,443	2464.9	− 2485	−20.1	× 100 / 293	−6.9
5	73,445	2504.4	− 2528	−23.6	× 95 / 293	−7.7
Sum, rounded to a whole point						−22

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	73,581	2420.4	− 2436	−15.6	× 106 / 300	−5.5
4	73,583	2461.0	− 2485	−24	× 93 / 300	−7.4
5	73,585	2493.8	− 2528	−34.2	× 101 / 300	−11.5
Sum, rounded to a whole point						−24

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	74,042	2427.3	− 2436	−8.7	× 97 / 296	−2.9
4	74,043	2459.9	− 2485	−25.1	× 102 / 296	−8.6
5	74,044	2510.7	− 2528	−17.3	× 97 / 296	−5.7
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	74,200	2431.7	− 2436	−4.3	× 100 / 294	−1.5
4	74,201	2491.1	− 2485	6.1	× 86 / 294	1.8
5	74,202	2505.2	− 2528	−22.8	× 108 / 294	−8.4
Sum, rounded to a whole point						−8

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	74,182	2418.6	− 2436	−17.4	× 111 / 298	−6.5
4	74,183	2488.3	− 2485	3.3	× 101 / 298	1.1
5	74,184	2502.4	− 2528	−25.6	× 86 / 298	−7.4
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	74,156	2408.0	− 2436	−28	× 96 / 307	−8.8
4	74,157	2453.5	− 2485	−31.5	× 109 / 307	−11.2
5	74,158	2504.1	− 2528	−23.9	× 102 / 307	−7.9
Sum, rounded to a whole point						−28

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	73,830	2420.6	− 2436	−15.4	× 89 / 280	−4.9
4	73,831	2459.6	− 2485	−25.4	× 90 / 280	−8.2
5	73,832	2503.6	− 2528	−24.4	× 101 / 280	−8.8
Sum, rounded to a whole point						−22

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	73,844	2422.8	− 2436	−13.2	× 97 / 268	−4.8
4	73,845	2443.2	− 2485	−41.8	× 82 / 268	−12.8
5	73,846	2495.3	− 2528	−32.7	× 89 / 268	−10.9
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. −23, −17, −22, −24, −17, −8, −13, −28, −22, −28 → −20.2
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 6 · 2016→2017: 5 · 2017→2018: 2 · 2018→2019: 7 · 2019→2022: 9 · 2022→2023: 5 · 2023→2024: 15 · 2024→2025: 6 · 2025→2026: 6 → average 6.8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 6.8 × 2.66 = 18.1. Upper limit −2.1, lower limit −38.3.

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.