BRIDGES 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 8.

3rd The average 3rd grader meets the grade 3 bar. 2449 vs. 2436.
4th The average 4th grader scores 12 points under the grade 4 bar. 2474 vs. 2485.
5th The average 5th grader scores 15 points under the grade 5 bar. 2513 vs. 2528.
6th The average 6th grader scores just under the grade 5 bar. 2525 vs. 2528. The 6th-grade bar is 2552.
7th The average 7th grader meets the grade 7 bar. 2586 vs. 2567.
8th The average 8th grader meets the grade 8 bar. 2615 vs. 2586.

2026 results. "Meets standard" is the state's mark for being on track for that grade.

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	102,876	2468.4	− 2436	32.4	× 37 / 222	5.4
4	102,877	2478.5	− 2485	−6.5	× 47 / 222	−1.4
5	102,880	2483.5	− 2528	−44.5	× 46 / 222	−9.2
6	102,881	2504.0	− 2552	−48	× 33 / 222	−7.1
7	102,884	2560.7	− 2567	−6.3	× 28 / 222	−0.8
8	102,885	2584.4	− 2586	−1.6	× 31 / 222	−0.2
Sum, rounded to a whole point						−13

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	95,587	2465.0	− 2436	29	× 49 / 243	5.8
4	95,590	2492.4	− 2485	7.4	× 41 / 243	1.2
5	95,592	2532.2	− 2528	4.2	× 51 / 243	0.9
6	95,593	2537.4	− 2552	−14.6	× 38 / 243	−2.3
7	95,596	2561.5	− 2567	−5.5	× 32 / 243	−0.7
8	95,598	2616.5	− 2586	30.5	× 32 / 243	4
Sum, rounded to a whole point						9

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	98,365	2445.7	− 2436	9.7	× 47 / 232	2
4	98,367	2486.5	− 2485	1.5	× 48 / 232	0.3
5	98,369	2507.0	− 2528	−21	× 41 / 232	−3.7
6	98,370	2509.1	− 2552	−42.9	× 37 / 232	−6.8
7	98,373	2562.5	− 2567	−4.5	× 31 / 232	−0.6
8	98,375	2544.4	− 2586	−41.6	× 28 / 232	−5
Sum, rounded to a whole point						−14

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	98,524	2469.2	− 2436	33.2	× 46 / 235	6.5
4	98,525	2525.4	− 2485	40.4	× 39 / 235	6.7
5	98,528	2526.5	− 2528	−1.5	× 48 / 235	−0.3
6	98,529	2530.3	− 2552	−21.7	× 38 / 235	−3.5
7	98,532	2549.0	− 2567	−18	× 35 / 235	−2.7
8	98,533	2621.3	− 2586	35.3	× 29 / 235	4.4
Sum, rounded to a whole point						11

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	99,185	2470.1	− 2436	34.1	× 48 / 237	6.9
4	99,186	2483.7	− 2485	−1.3	× 46 / 237	−0.3
5	99,187	2514.8	− 2528	−13.2	× 44 / 237	−2.5
6	99,188	2555.7	− 2552	3.7	× 35 / 237	0.5
7	99,189	2563.3	− 2567	−3.7	× 34 / 237	−0.5
8	99,190	2566.2	− 2586	−19.8	× 30 / 237	−2.5
Sum, rounded to a whole point						2

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	97,030	2450.7	− 2436	14.7	× 43 / 113	5.6
4	97,031	2475.2	− 2485	−9.8	× 38 / 113	−3.3
5	97,032	2520.9	− 2528	−7.1	× 32 / 113	−2
Sum, rounded to a whole point						0

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	99,378	2466.2	− 2436	30.2	× 49 / 219	6.8
4	99,379	2492.6	− 2485	7.6	× 40 / 219	1.4
5	99,380	2491.6	− 2528	−36.4	× 37 / 219	−6.1
6	99,381	2534.5	− 2552	−17.5	× 28 / 219	−2.2
7	99,382	2554.5	− 2567	−12.5	× 33 / 219	−1.9
8	99,383	2566.8	− 2586	−19.2	× 32 / 219	−2.8
Sum, rounded to a whole point						−5

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	99,219	2429.2	− 2436	−6.8	× 50 / 222	−1.5
4	99,220	2488.6	− 2485	3.6	× 44 / 222	0.7
5	99,221	2510.5	− 2528	−17.5	× 47 / 222	−3.7
6	99,222	2568.3	− 2552	16.3	× 33 / 222	2.4
7	99,223	2550.4	− 2567	−16.6	× 18 / 222	−1.3
8	99,224	2590.5	− 2586	4.5	× 30 / 222	0.6
Sum, rounded to a whole point						−3

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	99,125	2464.3	− 2436	28.3	× 52 / 239	6.2
4	99,126	2488.6	− 2485	3.6	× 45 / 239	0.7
5	99,127	2513.0	− 2528	−15	× 51 / 239	−3.2
6	99,128	2555.1	− 2552	3.1	× 35 / 239	0.5
7	99,129	2588.5	− 2567	21.5	× 35 / 239	3.1
8	99,130	2576.1	− 2586	−9.9	× 21 / 239	−0.9
Sum, rounded to a whole point						6

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	98,819	2461.3	− 2436	25.3	× 38 / 263	3.7
4	98,820	2494.8	− 2485	9.8	× 60 / 263	2.2
5	98,821	2493.7	− 2528	−34.3	× 48 / 263	−6.3
6	98,822	2566.5	− 2552	14.5	× 53 / 263	2.9
7	98,823	2568.9	− 2567	1.9	× 32 / 263	0.2
8	98,824	2623.2	− 2586	37.2	× 32 / 263	4.5
Sum, rounded to a whole point						7

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	98,485	2449.0	− 2436	13	× 46 / 271	2.2
4	98,486	2473.5	− 2485	−11.5	× 41 / 271	−1.7
5	98,487	2512.7	− 2528	−15.3	× 59 / 271	−3.3
6	98,488	2524.5	− 2552	−27.5	× 43 / 271	−4.4
7	98,489	2585.6	− 2567	18.6	× 52 / 271	3.6
8	98,490	2614.9	− 2586	28.9	× 30 / 271	3.2
Sum, rounded to a whole point						0

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −13, 9, −14, 11, 2, 0, −5, −3, 6, 7, 0 → 0
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 22 · 2016→2017: 23 · 2017→2018: 25 · 2018→2019: 9 · 2019→2021: 2 · 2021→2022: 5 · 2022→2023: 2 · 2023→2024: 9 · 2024→2025: 1 · 2025→2026: 7 → average 10.5
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 10.5 × 2.66 = 27.9. Upper limit 27.9, lower limit −27.9.

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.