Southport TK-8: 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 scores 17 points under the grade 3 bar. 2419 vs. 2436.
4th The average 4th grader meets the grade 4 bar. 2490 vs. 2485.
5th The average 5th grader scores 20 points under the grade 5 bar. 2508 vs. 2528.
6th The average 6th grader scores just under the grade 5 bar. 2519 vs. 2528. The 6th-grade bar is 2552.
7th The average 7th grader scores 24 points under the grade 5 bar. 2504 vs. 2528. The 7th-grade bar is 2567.
8th The average 8th grader scores 21 points under the grade 6 bar. 2531 vs. 2552. The 8th-grade bar is 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	105,509	2433.4	− 2436	−2.6	× 100 / 551	−0.5
4	105,512	2465.5	− 2485	−19.5	× 89 / 551	−3.1
5	105,513	2471.9	− 2528	−56.1	× 88 / 551	−9
6	105,516	2457.9	− 2552	−94.1	× 108 / 551	−18.4
7	105,517	2514.3	− 2567	−52.7	× 72 / 551	−6.9
8	105,520	2535.6	− 2586	−50.4	× 94 / 551	−8.6
Sum, rounded to a whole point						−47

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	98,021	2457.0	− 2436	21	× 95 / 519	3.8
4	98,024	2484.8	− 2485	−0.2	× 99 / 519	0
5	98,026	2477.3	− 2528	−50.7	× 74 / 519	−7.2
6	98,027	2478.0	− 2552	−74	× 82 / 519	−11.7
7	98,030	2554.6	− 2567	−12.4	× 89 / 519	−2.1
8	98,032	2575.1	− 2586	−10.9	× 80 / 519	−1.7
Sum, rounded to a whole point						−19

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	100,887	2434.3	− 2436	−1.7	× 96 / 560	−0.3
4	100,888	2509.2	− 2485	24.2	× 101 / 560	4.4
5	100,891	2485.4	− 2528	−42.6	× 96 / 560	−7.3
6	100,892	2465.1	− 2552	−86.9	× 95 / 560	−14.7
7	100,895	2491.8	− 2567	−75.2	× 88 / 560	−11.8
8	100,897	2545.2	− 2586	−40.8	× 84 / 560	−6.1
Sum, rounded to a whole point						−36

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	101,042	2424.5	− 2436	−11.5	× 86 / 534	−1.9
4	101,043	2483.5	− 2485	−1.5	× 88 / 534	−0.2
5	101,046	2523.8	− 2528	−4.2	× 94 / 534	−0.7
6	101,047	2493.6	− 2552	−58.4	× 95 / 534	−10.4
7	101,050	2524.0	− 2567	−43	× 91 / 534	−7.3
8	101,051	2529.5	− 2586	−56.5	× 80 / 534	−8.5
Sum, rounded to a whole point						−29

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	101,689	2448.9	− 2436	12.9	× 79 / 547	1.9
4	101,690	2504.8	− 2485	19.8	× 87 / 547	3.1
5	101,691	2515.5	− 2528	−12.5	× 90 / 547	−2.1
6	101,692	2536.8	− 2552	−15.2	× 102 / 547	−2.8
7	101,693	2537.0	− 2567	−30	× 100 / 547	−5.5
8	101,694	2533.0	− 2586	−53	× 89 / 547	−8.6
Sum, rounded to a whole point						−14

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	101,966	2426.7	− 2436	−9.3	× 68 / 420	−1.5
4	101,967	2488.8	− 2485	3.8	× 69 / 420	0.6
5	101,968	2479.4	− 2528	−48.6	× 63 / 420	−7.3
6	101,969	2535.5	− 2552	−16.5	× 62 / 420	−2.4
7	101,970	2546.4	− 2567	−20.6	× 79 / 420	−3.9
8	101,971	2517.0	− 2586	−69	× 79 / 420	−13
Sum, rounded to a whole point						−27

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	101,786	2422.9	− 2436	−13.1	× 74 / 437	−2.2
4	101,787	2482.6	− 2485	−2.4	× 74 / 437	−0.4
5	101,788	2464.4	− 2528	−63.6	× 76 / 437	−11.1
6	101,789	2449.0	− 2552	−103	× 68 / 437	−16
7	101,790	2517.0	− 2567	−50	× 68 / 437	−7.8
8	101,791	2542.8	− 2586	−43.2	× 77 / 437	−7.6
Sum, rounded to a whole point						−45

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	101,673	2446.0	− 2436	10	× 64 / 450	1.4
4	101,674	2478.8	− 2485	−6.2	× 83 / 450	−1.1
5	101,675	2486.2	− 2528	−41.8	× 83 / 450	−7.7
6	101,676	2504.3	− 2552	−47.7	× 72 / 450	−7.6
7	101,677	2476.8	− 2567	−90.2	× 81 / 450	−16.2
8	101,678	2522.0	− 2586	−64	× 67 / 450	−9.5
Sum, rounded to a whole point						−41

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	101,339	2413.8	− 2436	−22.2	× 76 / 486	−3.5
4	101,340	2501.1	− 2485	16.1	× 81 / 486	2.7
5	101,341	2511.9	− 2528	−16.1	× 82 / 486	−2.7
6	101,342	2480.0	− 2552	−72	× 91 / 486	−13.5
7	101,343	2492.4	− 2567	−74.6	× 79 / 486	−12.1
8	101,344	2483.2	− 2586	−102.8	× 77 / 486	−16.3
Sum, rounded to a whole point						−45

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	100,998	2419.4	− 2436	−16.6	× 65 / 484	−2.2
4	100,999	2490.1	− 2485	5.1	× 74 / 484	0.8
5	101,000	2507.6	− 2528	−20.4	× 88 / 484	−3.7
6	101,001	2518.6	− 2552	−33.4	× 87 / 484	−6
7	101,002	2504.3	− 2567	−62.7	× 92 / 484	−11.9
8	101,003	2531.0	− 2586	−55	× 78 / 484	−8.9
Sum, rounded to a whole point						−32

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −47, −19, −36, −29, −14, −27, −45, −41, −45, −32 → −33.5
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 28 · 2016→2017: 17 · 2017→2018: 7 · 2018→2019: 15 · 2019→2022: 13 · 2022→2023: 18 · 2023→2024: 4 · 2024→2025: 4 · 2025→2026: 13 → average 13.2
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 13.2 × 2.66 = 35.1. Upper limit 1.6, lower limit −68.6.

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.