Julius Corsini 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 3 bar

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.

Many students here are still learning English. The math test is written in English, with some translation help, and many of its questions are word problems. In 2026, 52 of the 153 students who took the math test were English learners.

All students

3rd The average 3rd grader scores 87 points under the grade 3 bar. 2349 vs. 2436.
4th The average 4th grader scores 27 points under the grade 3 bar. 2409 vs. 2436. The 4th-grade bar is 2485.
5th The average 5th grader scores 58 points under the grade 3 bar. 2378 vs. 2436. The 5th-grade bar is 2528.

Students fluent in English

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

Grade bars 3rd 31 students 86 points under the grade 3 bar. 4th 43 students 19 points under the grade 3 bar. 5th 27 students 30 points under the grade 3 bar.

English learners

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

Grade bars 3rd 14 students 90 points under the grade 3 bar. 4th 20 students 44 points under the grade 3 bar. 5th 18 students 100 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	57,675	2373.2	− 2436	−62.8	× 86 / 234	−23.1
4	57,676	2408.4	− 2485	−76.6	× 85 / 234	−27.8
5	57,679	2431.0	− 2528	−97	× 63 / 234	−26.1
Sum, rounded to a whole point						−77

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	53,533	2363.6	− 2436	−72.4	× 66 / 242	−19.7
4	53,536	2406.5	− 2485	−78.5	× 89 / 242	−28.9
5	53,538	2398.6	− 2528	−129.4	× 87 / 242	−46.5
Sum, rounded to a whole point						−95

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	55,095	2370.1	− 2436	−65.9	× 68 / 227	−19.7
4	55,097	2396.4	− 2485	−88.6	× 69 / 227	−26.9
5	55,099	2421.0	− 2528	−107	× 90 / 227	−42.4
Sum, rounded to a whole point						−89

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	55,189	2362.4	− 2436	−73.6	× 76 / 213	−26.3
4	55,192	2396.3	− 2485	−88.7	× 70 / 213	−29.2
5	55,193	2419.6	− 2528	−108.4	× 67 / 213	−34.1
Sum, rounded to a whole point						−90

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	55,434	2400.1	− 2436	−35.9	× 68 / 206	−11.9
4	55,435	2409.5	− 2485	−75.5	× 75 / 206	−27.5
5	55,436	2447.2	− 2528	−80.8	× 63 / 206	−24.7
Sum, rounded to a whole point						−64

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	55,486	2344.5	− 2436	−91.5	× 78 / 202	−35.3
4	55,487	2433.2	− 2485	−51.8	× 65 / 202	−16.7
5	55,488	2403.1	− 2528	−124.9	× 59 / 202	−36.5
Sum, rounded to a whole point						−88

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	55,435	2340.9	− 2436	−95.1	× 67 / 205	−31.1
4	55,436	2403.6	− 2485	−81.4	× 76 / 205	−30.2
5	55,437	2420.1	− 2528	−107.9	× 62 / 205	−32.6
Sum, rounded to a whole point						−94

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	55,311	2333.1	− 2436	−102.9	× 56 / 202	−28.5
4	55,312	2384.4	− 2485	−100.6	× 71 / 202	−35.4
5	55,313	2430.9	− 2528	−97.1	× 75 / 202	−36.1
Sum, rounded to a whole point						−100

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	55,063	2355.9	− 2436	−80.1	× 71 / 183	−31.1
4	55,064	2369.0	− 2485	−116	× 45 / 183	−28.5
5	55,065	2407.4	− 2528	−120.6	× 67 / 183	−44.2
Sum, rounded to a whole point						−104

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	54,978	2348.9	− 2436	−87.1	× 45 / 153	−25.6
4	54,979	2408.9	− 2485	−76.1	× 63 / 153	−31.3
5	54,980	2378.0	− 2528	−150	× 45 / 153	−44.1
Sum, rounded to a whole point						−101

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −77, −95, −89, −90, −64, −88, −94, −100, −104, −101 → −90.2
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 18 · 2016→2017: 6 · 2017→2018: 1 · 2018→2019: 26 · 2019→2022: 24 · 2022→2023: 6 · 2023→2024: 6 · 2024→2025: 4 · 2025→2026: 3 → average 10.4
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 10.4 × 2.66 = 27.7. Upper limit −62.5, lower limit −117.9.

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.