Maxine Hong Kingston Elementary: 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.

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	80,467	2375.7	− 2436	−60.3	× 101 / 534	−11.4
4	80,470	2409.7	− 2485	−75.3	× 97 / 534	−13.7
5	80,471	2412.8	− 2528	−115.2	× 89 / 534	−19.2
6	80,474	2465.4	− 2552	−86.6	× 84 / 534	−13.6
7	80,475	2471.2	− 2567	−95.8	× 82 / 534	−14.7
8	80,478	2504.5	− 2586	−81.5	× 81 / 534	−12.4
Sum, rounded to a whole point						−85

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	74,568	2372.1	− 2436	−63.9	× 85 / 534	−10.2
4	74,570	2417.0	− 2485	−68	× 100 / 534	−12.7
5	74,573	2425.8	− 2528	−102.2	× 97 / 534	−18.6
6	74,574	2452.5	− 2552	−99.5	× 86 / 534	−16
7	74,576	2472.8	− 2567	−94.2	× 82 / 534	−14.5
8	74,579	2488.7	− 2586	−97.3	× 84 / 534	−15.3
Sum, rounded to a whole point						−87

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	76,553	2401.9	− 2436	−34.1	× 85 / 527	−5.5
4	76,556	2409.0	− 2485	−76	× 82 / 527	−11.8
5	76,558	2439.0	− 2528	−89	× 95 / 527	−16
6	76,560	2450.3	− 2552	−101.7	× 97 / 527	−18.7
7	76,562	2466.9	− 2567	−100.1	× 82 / 527	−15.6
8	76,564	2490.5	− 2586	−95.5	× 86 / 527	−15.6
Sum, rounded to a whole point						−83

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	76,736	2405.9	− 2436	−30.1	× 84 / 524	−4.8
4	76,739	2443.6	− 2485	−41.4	× 88 / 524	−7
5	76,740	2433.2	− 2528	−94.8	× 89 / 524	−16.1
6	76,743	2454.0	− 2552	−98	× 90 / 524	−16.8
7	76,744	2503.3	− 2567	−63.7	× 89 / 524	−10.8
8	76,747	2493.3	− 2586	−92.7	× 84 / 524	−14.9
Sum, rounded to a whole point						−70

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	77,243	2393.3	− 2436	−42.7	× 94 / 546	−7.4
4	77,244	2434.8	− 2485	−50.2	× 92 / 546	−8.5
5	77,245	2454.9	− 2528	−73.1	× 91 / 546	−12.2
6	77,246	2459.1	− 2552	−92.9	× 92 / 546	−15.7
7	77,247	2492.1	− 2567	−74.9	× 88 / 546	−12.1
8	77,248	2521.9	− 2586	−64.1	× 89 / 546	−10.4
Sum, rounded to a whole point						−66

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	77,395	2365.0	− 2436	−71	× 95 / 521	−12.9
4	77,396	2411.1	− 2485	−73.9	× 90 / 521	−12.8
5	77,397	2432.2	− 2528	−95.8	× 86 / 521	−15.8
6	77,398	2468.2	− 2552	−83.8	× 81 / 521	−13
7	77,399	2466.2	− 2567	−100.8	× 89 / 521	−17.2
8	77,400	2478.8	− 2586	−107.2	× 80 / 521	−16.5
Sum, rounded to a whole point						−88

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	77,381	2368.0	− 2436	−68	× 93 / 499	−12.7
4	77,382	2408.0	− 2485	−77	× 85 / 499	−13.1
5	77,383	2449.4	− 2528	−78.6	× 91 / 499	−14.3
6	77,384	2467.0	− 2552	−85	× 79 / 499	−13.5
7	77,385	2499.8	− 2567	−67.2	× 76 / 499	−10.2
8	77,386	2485.0	− 2586	−101	× 75 / 499	−15.2
Sum, rounded to a whole point						−79

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	77,381	2366.1	− 2436	−69.9	× 82 / 472	−12.1
4	77,382	2420.0	− 2485	−65	× 81 / 472	−11.2
5	77,383	2446.0	− 2528	−82	× 81 / 472	−14.1
6	77,384	2464.3	− 2552	−87.7	× 82 / 472	−15.2
7	77,385	2495.9	− 2567	−71.1	× 71 / 472	−10.7
8	77,386	2539.3	− 2586	−46.7	× 75 / 472	−7.4
Sum, rounded to a whole point						−71

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	77,035	2373.2	− 2436	−62.8	× 81 / 460	−11.1
4	77,036	2414.6	− 2485	−70.4	× 81 / 460	−12.4
5	77,037	2435.1	− 2528	−92.9	× 76 / 460	−15.3
6	77,038	2452.1	− 2552	−99.9	× 77 / 460	−16.7
7	77,039	2493.7	− 2567	−73.3	× 81 / 460	−12.9
8	77,040	2481.3	− 2586	−104.7	× 64 / 460	−14.6
Sum, rounded to a whole point						−83

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −85, −87, −83, −70, −66, −88, −79, −71, −83 → −79.1
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 2 · 2016→2017: 4 · 2017→2018: 13 · 2018→2019: 4 · 2019→2022: 22 · 2022→2023: 9 · 2023→2024: 8 · 2024→2025: 12 → average 9.3
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 9.3 × 2.66 = 24.7. Upper limit −54.4, lower limit −103.8.

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.