Excelsior Charter: 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 11.

All students

7th The average 7th grader scores just under the grade 4 bar. 2484 vs. 2485. The 7th-grade bar is 2567.
8th The average 8th grader scores 31 points under the grade 5 bar. 2497 vs. 2528. The 8th-grade bar is 2586.
11th The average 11th grader scores 23 points under the grade 6 bar. 2529 vs. 2552. The 11th-grade bar is 2628.

Students fluent in English

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

Grade bars 7th 322 students 37 points under the grade 5 bar. 8th 416 students 24 points under the grade 5 bar. 11th 359 students 19 points under the grade 6 bar.

English learners

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

Grade bars 7th 27 students 40 points under the grade 3 bar. 8th 33 students 28 points under the grade 3 bar. 11th 26 students 13 points under the grade 4 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.

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	61,622	2475.5	− 2567	−91.5	× 306 / 967	−29
8	61,623	2488.4	− 2586	−97.6	× 306 / 967	−30.9
11	61,624	2517.5	− 2628	−110.5	× 355 / 967	−40.6
Sum, rounded to a whole point						−100

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	61,717	2447.4	− 2567	−119.6	× 295 / 1009	−35
8	61,718	2444.0	− 2586	−142	× 353 / 1009	−49.7
11	61,719	2500.6	− 2628	−127.4	× 361 / 1009	−45.6
Sum, rounded to a whole point						−130

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	61,661	2468.0	− 2567	−99	× 334 / 1114	−29.7
8	61,662	2451.7	− 2586	−134.3	× 366 / 1114	−44.1
11	61,663	2498.1	− 2628	−129.9	× 414 / 1114	−48.3
Sum, rounded to a whole point						−122

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	61,612	2473.9	− 2567	−93.1	× 281 / 933	−28
8	61,613	2464.4	− 2586	−121.6	× 362 / 933	−47.2
11	61,614	2503.3	− 2628	−124.7	× 290 / 933	−38.8
Sum, rounded to a whole point						−114

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	61,379	2491.4	− 2567	−75.6	× 434 / 1203	−27.3
8	61,380	2486.1	− 2586	−99.9	× 428 / 1203	−35.5
11	61,381	2522.2	− 2628	−105.8	× 341 / 1203	−30
Sum, rounded to a whole point						−93

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	61,352	2484.0	− 2567	−83	× 349 / 1183	−24.5
8	61,353	2497.1	− 2586	−88.9	× 449 / 1183	−33.7
11	61,354	2529.2	− 2628	−98.8	× 385 / 1183	−32.2
Sum, rounded to a whole point						−90

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −100, −130, −122, −114, −93, −90 → −108.2
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2019→2022: 30 · 2022→2023: 8 · 2023→2024: 8 · 2024→2025: 21 · 2025→2026: 3 → average 14
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 14 × 2.66 = 37.2. Upper limit −71, lower limit −145.4.

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 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.