Gustine Unified: english

The shaded band is this district'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	44,720	2335.0	− 2432	−97	× 141 / 987	−13.9
4	44,721	2391.5	− 2473	−81.5	× 140 / 987	−11.6
5	44,724	2443.4	− 2502	−58.6	× 121 / 987	−7.2
6	44,725	2439.7	− 2531	−91.3	× 144 / 987	−13.3
7	44,728	2495.4	− 2552	−56.6	× 147 / 987	−8.4
8	44,729	2523.9	− 2567	−43.1	× 158 / 987	−6.9
11	44,732	2573.1	− 2583	−9.9	× 136 / 987	−1.4
Sum, rounded to a whole point						−63

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	41,445	2341.3	− 2432	−90.7	× 132 / 979	−12.2
4	41,447	2387.4	− 2473	−85.6	× 142 / 979	−12.4
5	41,450	2447.0	− 2502	−55	× 151 / 979	−8.5
6	41,451	2464.9	− 2531	−66.1	× 117 / 979	−7.9
7	41,454	2476.7	− 2552	−75.3	× 140 / 979	−10.8
8	41,456	2533.8	− 2567	−33.2	× 153 / 979	−5.2
11	41,458	2586.8	− 2583	3.8	× 144 / 979	0.6
Sum, rounded to a whole point						−56

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	42,463	2384.3	− 2432	−47.7	× 121 / 966	−6
4	42,465	2399.0	− 2473	−74	× 135 / 966	−10.3
5	42,466	2437.7	− 2502	−64.3	× 149 / 966	−9.9
6	42,469	2450.9	− 2531	−80.1	× 154 / 966	−12.8
7	42,471	2503.7	− 2552	−48.3	× 120 / 966	−6
8	42,473	2512.7	− 2567	−54.3	× 144 / 966	−8.1
11	42,475	2595.2	− 2583	12.2	× 143 / 966	1.8
Sum, rounded to a whole point						−51

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	42,475	2373.4	− 2432	−58.6	× 134 / 977	−8
4	42,478	2432.5	− 2473	−40.5	× 118 / 977	−4.9
5	42,479	2432.0	− 2502	−70	× 144 / 977	−10.3
6	42,482	2460.4	− 2531	−70.6	× 147 / 977	−10.6
7	42,483	2490.9	− 2552	−61.1	× 150 / 977	−9.4
8	42,486	2508.2	− 2567	−58.8	× 126 / 977	−7.6
11	42,487	2544.7	− 2583	−38.3	× 158 / 977	−6.2
Sum, rounded to a whole point						−57

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	42,611	2374.4	− 2432	−57.6	× 129 / 981	−7.6
4	42,612	2421.5	− 2473	−51.5	× 139 / 981	−7.3
5	42,613	2476.1	− 2502	−25.9	× 128 / 981	−3.4
6	42,614	2470.2	− 2531	−60.8	× 129 / 981	−8
7	42,615	2484.3	− 2552	−67.7	× 152 / 981	−10.5
8	42,616	2500.8	− 2567	−66.2	× 158 / 981	−10.7
11	42,617	2572.5	− 2583	−10.5	× 146 / 981	−1.6
Sum, rounded to a whole point						−49

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	42,370	2342.3	− 2432	−89.7	× 132 / 954	−12.4
4	42,371	2411.2	− 2473	−61.8	× 124 / 954	−8
5	42,372	2440.7	− 2502	−61.3	× 140 / 954	−9
6	42,373	2445.9	− 2531	−85.1	× 124 / 954	−11.1
7	42,374	2502.2	− 2552	−49.8	× 141 / 954	−7.4
8	42,375	2502.3	− 2567	−64.7	× 125 / 954	−8.5
11	42,376	2535.9	− 2583	−47.1	× 168 / 954	−8.3
Sum, rounded to a whole point						−65

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	42,397	2366.2	− 2432	−65.8	× 113 / 908	−8.2
4	42,398	2374.8	− 2473	−98.2	× 125 / 908	−13.5
5	42,399	2439.1	− 2502	−62.9	× 119 / 908	−8.2
6	42,400	2439.9	− 2531	−91.1	× 137 / 908	−13.7
7	42,401	2468.8	− 2552	−83.2	× 120 / 908	−11
8	42,402	2486.1	− 2567	−80.9	× 141 / 908	−12.6
11	42,403	2554.7	− 2583	−28.3	× 153 / 908	−4.8
Sum, rounded to a whole point						−72

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	42,232	2371.3	− 2432	−60.7	× 119 / 851	−8.5
4	42,233	2400.7	− 2473	−72.3	× 109 / 851	−9.3
5	42,234	2437.5	− 2502	−64.5	× 117 / 851	−8.9
6	42,235	2447.1	− 2531	−83.9	× 119 / 851	−11.7
7	42,236	2445.9	− 2552	−106.1	× 129 / 851	−16.1
8	42,237	2457.7	− 2567	−109.3	× 121 / 851	−15.5
11	42,238	2547.8	− 2583	−35.2	× 137 / 851	−5.7
Sum, rounded to a whole point						−76

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	41,991	2363.2	− 2432	−68.8	× 105 / 826	−8.7
4	41,992	2402.6	− 2473	−70.4	× 126 / 826	−10.7
5	41,993	2453.1	− 2502	−48.9	× 107 / 826	−6.3
6	41,994	2449.9	− 2531	−81.1	× 120 / 826	−11.8
7	41,995	2477.7	− 2552	−74.3	× 115 / 826	−10.3
8	41,996	2475.8	− 2567	−91.2	× 132 / 826	−14.6
11	41,997	2579.8	− 2583	−3.2	× 121 / 826	−0.5
Sum, rounded to a whole point						−63

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	41,893	2380.0	− 2432	−52	× 96 / 812	−6.1
4	41,894	2407.7	− 2473	−65.3	× 103 / 812	−8.3
5	41,895	2439.0	− 2502	−63	× 123 / 812	−9.5
6	41,896	2474.0	− 2531	−57	× 106 / 812	−7.4
7	41,897	2463.0	− 2552	−89	× 120 / 812	−13.2
8	41,898	2498.3	− 2567	−68.7	× 114 / 812	−9.6
11	41,899	2568.6	− 2583	−14.4	× 150 / 812	−2.7
Sum, rounded to a whole point						−57

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −63, −56, −51, −57, −49, −65, −72, −76, −63, −57 → −60.9
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 7 · 2016→2017: 5 · 2017→2018: 6 · 2018→2019: 8 · 2019→2022: 16 · 2022→2023: 7 · 2023→2024: 4 · 2024→2025: 13 · 2025→2026: 6 → average 8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 8 × 2.66 = 21.3. Upper limit −39.6, lower limit −82.2.

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 — for a district, the total across its schools. From 2014–15, 2015–16, 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.

Gustine Unified