Bethune K-8: math · Schoolio

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.

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	75,054	2439.0	− 2436	3	× 70 / 476	0.4
4	75,056	2457.9	− 2485	−27.1	× 62 / 476	−3.5
5	75,058	2503.4	− 2528	−24.6	× 77 / 476	−4
6	75,060	2534.1	− 2552	−17.9	× 91 / 476	−3.4
7	75,062	2577.2	− 2567	10.2	× 87 / 476	1.9
8	75,064	2579.4	− 2586	−6.6	× 89 / 476	−1.2
Sum, rounded to a whole point						−10

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	69,757	2459.9	− 2436	23.9	× 55 / 452	2.9
4	69,758	2476.2	− 2485	−8.8	× 73 / 452	−1.4
5	69,760	2506.7	− 2528	−21.3	× 61 / 452	−2.9
6	69,763	2541.0	− 2552	−11	× 84 / 452	−2
7	69,765	2577.2	− 2567	10.2	× 92 / 452	2.1
8	69,767	2605.3	− 2586	19.3	× 87 / 452	3.7
Sum, rounded to a whole point						2

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	71,589	2444.2	− 2436	8.2	× 52 / 428	1
4	71,591	2484.7	− 2485	−0.3	× 58 / 428	0
5	71,593	2499.2	− 2528	−28.8	× 80 / 428	−5.4
6	71,596	2536.6	− 2552	−15.4	× 75 / 428	−2.7
7	71,598	2578.5	− 2567	11.5	× 74 / 428	2
8	71,599	2567.2	− 2586	−18.8	× 89 / 428	−3.9
Sum, rounded to a whole point						−9

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	71,735	2471.1	− 2436	35.1	× 47 / 407	4.1
4	71,736	2466.9	− 2485	−18.1	× 55 / 407	−2.4
5	71,739	2549.0	− 2528	21	× 60 / 407	3.1
6	71,740	2523.9	− 2552	−28.1	× 86 / 407	−5.9
7	71,743	2564.5	− 2567	−2.5	× 83 / 407	−0.5
8	71,744	2609.7	− 2586	23.7	× 76 / 407	4.4
Sum, rounded to a whole point						3

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	72,223	2454.4	− 2436	18.4	× 52 / 398	2.4
4	72,224	2491.5	− 2485	6.5	× 51 / 398	0.8
5	72,225	2518.8	− 2528	−9.2	× 58 / 398	−1.3
6	72,226	2545.1	− 2552	−6.9	× 68 / 398	−1.2
7	72,227	2544.1	− 2567	−22.9	× 89 / 398	−5.1
8	72,228	2594.2	− 2586	8.2	× 80 / 398	1.6
Sum, rounded to a whole point						−3

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	72,313	2413.5	− 2436	−22.5	× 55 / 343	−3.6
4	72,314	2493.5	− 2485	8.5	× 54 / 343	1.3
5	72,315	2519.2	− 2528	−8.8	× 58 / 343	−1.5
6	72,316	2503.8	− 2552	−48.2	× 59 / 343	−8.3
7	72,317	2531.7	− 2567	−35.3	× 54 / 343	−5.6
8	72,318	2506.3	− 2586	−79.7	× 63 / 343	−14.6
Sum, rounded to a whole point						−32

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	72,307	2443.8	− 2436	7.8	× 54 / 360	1.2
4	72,308	2472.7	− 2485	−12.3	× 62 / 360	−2.1
5	72,309	2531.1	− 2528	3.1	× 57 / 360	0.5
6	72,310	2526.5	− 2552	−25.5	× 76 / 360	−5.4
7	72,311	2551.3	− 2567	−15.7	× 57 / 360	−2.5
8	72,312	2562.4	− 2586	−23.6	× 54 / 360	−3.5
Sum, rounded to a whole point						−12

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	72,289	2450.3	− 2436	14.3	× 33 / 350	1.3
4	72,290	2469.3	− 2485	−15.7	× 50 / 350	−2.2
5	72,291	2499.2	− 2528	−28.8	× 65 / 350	−5.3
6	72,292	2514.7	− 2552	−37.3	× 71 / 350	−7.6
7	72,293	2578.1	− 2567	11.1	× 73 / 350	2.3
8	72,294	2588.1	− 2586	2.1	× 58 / 350	0.3
Sum, rounded to a whole point						−11

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	72,005	2428.5	− 2436	−7.5	× 51 / 354	−1.1
4	72,006	2538.8	− 2485	53.8	× 31 / 354	4.7
5	72,007	2515.3	− 2528	−12.7	× 51 / 354	−1.8
6	72,008	2555.7	− 2552	3.7	× 73 / 354	0.8
7	72,009	2576.0	− 2567	9	× 71 / 354	1.8
8	72,010	2604.0	− 2586	18	× 77 / 354	3.9
Sum, rounded to a whole point						8

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −10, 2, −9, 3, −3, −32, −12, −11, 8 → −7.1
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 12 · 2016→2017: 11 · 2017→2018: 12 · 2018→2019: 6 · 2019→2022: 29 · 2022→2023: 20 · 2023→2024: 1 · 2024→2025: 19 → average 13.8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 13.8 × 2.66 = 36.7. Upper limit 29.6, lower limit −43.8.

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.