Bostonia Global: 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.

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, 203 of the 650 students who took the math test were English learners.

All students

3rd The average 3rd grader scores 43 points under the grade 3 bar. 2393 vs. 2436.
4th The average 4th grader scores just under the grade 3 bar. 2434 vs. 2436. The 4th-grade bar is 2485.
5th The average 5th grader scores 45 points under the grade 4 bar. 2440 vs. 2485. The 5th-grade bar is 2528.
6th The average 6th grader scores 23 points under the grade 4 bar. 2462 vs. 2485. The 6th-grade bar is 2552.
7th The average 7th grader scores 32 points under the grade 4 bar. 2453 vs. 2485. The 7th-grade bar is 2567.
8th The average 8th grader scores 41 points under the grade 4 bar. 2444 vs. 2485. The 8th-grade bar is 2586.
11th The average 11th grader scores 37 points under the grade 4 bar. 2448 vs. 2485. 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 3rd 78 students 35 points under the grade 3 bar. 4th 68 students 30 points under the grade 4 bar. 5th 68 students 25 points under the grade 4 bar. 6th 42 students 34 points under the grade 5 bar. 7th 60 students 37 points under the grade 5 bar. 8th 92 students 38 points under the grade 5 bar. 11th 39 students 43 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 31 students 64 points under the grade 3 bar. 4th 30 students 51 points under the grade 3 bar. 5th 23 students 55 points under the grade 3 bar. 6th 15 students 61 points under the grade 3 bar. 7th 35 students 49 points under the grade 3 bar. 8th 48 students 81 points under the grade 3 bar. 11th 21 students 56 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.

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	67,589	2398.4	− 2436	−37.6	× 120 / 505	−8.9
4	67,590	2442.5	− 2485	−42.5	× 97 / 505	−8.2
5	67,591	2450.8	− 2528	−77.2	× 96 / 505	−14.7
6	67,592	2461.3	− 2552	−90.7	× 57 / 505	−10.2
7	67,593	2475.9	− 2567	−91.1	× 77 / 505	−13.9
8	67,594	2477.2	− 2586	−108.8	× 58 / 505	−12.5
Sum, rounded to a whole point						−68

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	67,600	2404.2	− 2436	−31.8	× 89 / 559	−5.1
4	67,601	2449.2	− 2485	−35.8	× 119 / 559	−7.6
5	67,602	2445.9	− 2528	−82.1	× 89 / 559	−13.1
6	67,603	2458.3	− 2552	−93.7	× 65 / 559	−10.9
7	67,604	2449.7	− 2567	−117.3	× 81 / 559	−17
8	67,605	2462.5	− 2586	−123.5	× 91 / 559	−20.1
11	67,606	2424.0	− 2628	−204	× 25 / 559	−9.1
Sum, rounded to a whole point						−83

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	67,594	2397.1	− 2436	−38.9	× 102 / 586	−6.8
4	67,595	2447.3	− 2485	−37.7	× 88 / 586	−5.7
5	67,596	2443.4	− 2528	−84.6	× 106 / 586	−15.3
6	67,597	2446.6	− 2552	−105.4	× 65 / 586	−11.7
7	67,598	2444.6	− 2567	−122.4	× 76 / 586	−15.9
8	67,599	2463.1	− 2586	−122.9	× 76 / 586	−15.9
11	67,600	2444.9	− 2628	−183.1	× 73 / 586	−22.8
Sum, rounded to a whole point						−94

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	67,352	2401.0	− 2436	−35	× 101 / 635	−5.6
4	67,353	2415.5	− 2485	−69.5	× 99 / 635	−10.8
5	67,354	2433.5	− 2528	−94.5	× 85 / 635	−12.6
6	67,355	2447.6	− 2552	−104.4	× 82 / 635	−13.5
7	67,356	2430.6	− 2567	−136.4	× 139 / 635	−29.9
8	67,357	2437.2	− 2586	−148.8	× 78 / 635	−18.3
11	67,358	2449.3	− 2628	−178.7	× 51 / 635	−14.4
Sum, rounded to a whole point						−105

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	67,401	2392.8	− 2436	−43.2	× 109 / 650	−7.2
4	67,402	2433.7	− 2485	−51.3	× 98 / 650	−7.7
5	67,403	2439.9	− 2528	−88.1	× 91 / 650	−12.3
6	67,404	2462.3	− 2552	−89.7	× 57 / 650	−7.9
7	67,405	2452.8	− 2567	−114.2	× 95 / 650	−16.7
8	67,406	2444.2	− 2586	−141.8	× 140 / 650	−30.5
11	67,407	2448.2	− 2628	−179.8	× 60 / 650	−16.6
Sum, rounded to a whole point						−99

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −68, −83, −94, −105, −99 → −89.8
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2022→2023: 15 · 2023→2024: 11 · 2024→2025: 11 · 2025→2026: 6 → average 10.8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 10.8 × 2.66 = 28.7. Upper limit −61.1, lower limit −118.5.

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".

Step 3 · Free or reduced-price meals

The share of enrolled students eligible for free or reduced-price meals. From 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.