Di Giorgio Elementary: 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	16,726	2348.2	− 2432	−83.8	× 26 / 142	−15.3
4	16,727	2403.4	− 2473	−69.6	× 25 / 142	−12.3
5	16,730	2402.7	− 2502	−99.3	× 23 / 142	−16.1
6	16,731	2454.4	− 2531	−76.6	× 24 / 142	−12.9
7	16,733	2495.6	− 2552	−56.4	× 25 / 142	−9.9
8	16,735	2488.5	− 2567	−78.5	× 19 / 142	−10.5
Sum, rounded to a whole point						−77

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	15,747	2309.8	− 2432	−122.2	× 17 / 142	−14.6
4	15,748	2399.5	− 2473	−73.5	× 30 / 142	−15.5
5	15,750	2467.6	− 2502	−34.4	× 25 / 142	−6.1
6	15,753	2463.6	− 2531	−67.4	× 22 / 142	−10.4
7	15,755	2498.0	− 2552	−54	× 25 / 142	−9.5
8	15,756	2536.0	− 2567	−31	× 23 / 142	−5
Sum, rounded to a whole point						−61

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,067	2358.2	− 2432	−73.8	× 28 / 148	−14
4	16,069	2361.6	− 2473	−111.4	× 18 / 148	−13.5
5	16,072	2438.6	− 2502	−63.4	× 32 / 148	−13.7
6	16,073	2513.2	− 2531	−17.8	× 24 / 148	−2.9
7	16,075	2516.4	− 2552	−35.6	× 22 / 148	−5.3
8	16,078	2493.3	− 2567	−73.7	× 24 / 148	−12
Sum, rounded to a whole point						−61

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,085	2358.3	− 2432	−73.7	× 24 / 148	−12
4	16,086	2411.4	− 2473	−61.6	× 30 / 148	−12.5
5	16,089	2442.9	− 2502	−59.1	× 19 / 148	−7.6
6	16,090	2491.5	− 2531	−39.5	× 32 / 148	−8.5
7	16,093	2532.0	− 2552	−20	× 22 / 148	−3
8	16,094	2522.0	− 2567	−45	× 21 / 148	−6.4
Sum, rounded to a whole point						−50

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,212	2371.5	− 2432	−60.5	× 24 / 148	−9.8
4	16,213	2391.1	− 2473	−81.9	× 23 / 148	−12.7
5	16,214	2444.9	− 2502	−57.1	× 28 / 148	−10.8
6	16,215	2483.8	− 2531	−47.2	× 18 / 148	−5.7
7	16,216	2534.4	− 2552	−17.6	× 32 / 148	−3.8
8	16,217	2562.2	− 2567	−4.8	× 23 / 148	−0.7
Sum, rounded to a whole point						−44

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,254	2339.6	− 2432	−92.4	× 25 / 136	−17
4	16,255	2368.1	− 2473	−104.9	× 15 / 136	−11.6
5	16,256	2443.4	− 2502	−58.6	× 21 / 136	−9
6	16,257	2494.7	− 2531	−36.3	× 26 / 136	−6.9
7	16,258	2523.0	− 2552	−29	× 23 / 136	−4.9
8	16,259	2531.5	− 2567	−35.5	× 26 / 136	−6.8
Sum, rounded to a whole point						−56

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,192	2343.2	− 2432	−88.8	× 29 / 152	−16.9
4	16,193	2390.4	− 2473	−82.6	× 28 / 152	−15.2
5	16,194	2380.2	− 2502	−121.8	× 17 / 152	−13.6
6	16,195	2448.5	− 2531	−82.5	× 23 / 152	−12.5
7	16,196	2526.4	− 2552	−25.6	× 29 / 152	−4.9
8	16,197	2539.3	− 2567	−27.7	× 26 / 152	−4.7
Sum, rounded to a whole point						−68

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,137	2359.5	− 2432	−72.5	× 23 / 153	−10.9
4	16,138	2374.2	− 2473	−98.8	× 28 / 153	−18.1
5	16,139	2411.5	− 2502	−90.5	× 29 / 153	−17.2
6	16,140	2457.3	− 2531	−73.7	× 16 / 153	−7.7
7	16,141	2527.5	− 2552	−24.5	× 27 / 153	−4.3
8	16,142	2542.1	− 2567	−24.9	× 30 / 153	−4.9
Sum, rounded to a whole point						−63

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,124	2329.6	− 2432	−102.4	× 31 / 153	−20.7
4	16,125	2387.8	− 2473	−85.2	× 24 / 153	−13.4
5	16,126	2399.3	− 2502	−102.7	× 27 / 153	−18.1
6	16,127	2461.6	− 2531	−69.4	× 30 / 153	−13.6
7	16,128	2469.8	− 2552	−82.2	× 18 / 153	−9.7
8	16,129	2564.6	− 2567	−2.4	× 23 / 153	−0.4
Sum, rounded to a whole point						−76

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −77, −61, −61, −50, −44, −56, −68, −63, −76 → −61.8
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 16 · 2016→2017: 0 · 2017→2018: 11 · 2018→2019: 6 · 2019→2022: 12 · 2022→2023: 12 · 2023→2024: 5 · 2024→2025: 13 → average 9.4
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 9.4 × 2.66 = 25. Upper limit −36.8, lower limit −86.8.

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 — 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.

Schools in Di Giorgio Elementary

Di Giorgio Elementary