Santiago Elementary: english

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	52,539	2430.5	− 2432	−1.5	× 64 / 274	−0.4
4	52,541	2454.4	− 2473	−18.6	× 65 / 274	−4.4
5	52,543	2491.5	− 2502	−10.5	× 84 / 274	−3.2
6	52,545	2524.1	− 2531	−6.9	× 61 / 274	−1.5
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	48,816	2400.5	− 2432	−31.5	× 51 / 257	−6.3
4	48,818	2466.2	− 2473	−6.8	× 60 / 257	−1.6
5	48,819	2495.0	− 2502	−7	× 66 / 257	−1.8
6	48,821	2540.8	− 2531	9.8	× 80 / 257	3.1
Sum, rounded to a whole point						−7

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,151	2379.4	− 2432	−52.6	× 62 / 243	−13.4
4	50,153	2414.3	− 2473	−58.7	× 51 / 243	−12.3
5	50,156	2477.4	− 2502	−24.6	× 61 / 243	−6.2
6	50,157	2508.5	− 2531	−22.5	× 69 / 243	−6.4
Sum, rounded to a whole point						−38

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,179	2385.7	− 2432	−46.3	× 54 / 222	−11.3
4	50,181	2441.1	− 2473	−31.9	× 58 / 222	−8.3
5	50,183	2491.6	− 2502	−10.4	× 48 / 222	−2.2
6	50,185	2544.4	− 2531	13.4	× 62 / 222	3.7
Sum, rounded to a whole point						−18

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,368	2415.2	− 2432	−16.8	× 69 / 252	−4.6
4	50,369	2431.4	− 2473	−41.6	× 70 / 252	−11.6
5	50,370	2482.9	− 2502	−19.1	× 60 / 252	−4.5
6	50,371	2529.2	− 2531	−1.8	× 53 / 252	−0.4
Sum, rounded to a whole point						−21

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,270	2417.5	− 2432	−14.5	× 82 / 271	−4.4
4	50,271	2475.9	− 2473	2.9	× 71 / 271	0.8
5	50,272	2487.4	− 2502	−14.6	× 56 / 271	−3
6	50,273	2518.5	− 2531	−12.5	× 62 / 271	−2.9
Sum, rounded to a whole point						−10

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,230	2440.3	− 2432	8.3	× 67 / 275	2
4	50,231	2469.1	− 2473	−3.9	× 81 / 275	−1.1
5	50,232	2484.9	− 2502	−17.1	× 70 / 275	−4.4
6	50,233	2531.9	− 2531	0.9	× 57 / 275	0.2
Sum, rounded to a whole point						−3

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,085	2448.2	− 2432	16.2	× 67 / 282	3.8
4	50,086	2477.5	− 2473	4.5	× 66 / 282	1.1
5	50,087	2507.0	− 2502	5	× 79 / 282	1.4
6	50,088	2539.5	− 2531	8.5	× 70 / 282	2.1
Sum, rounded to a whole point						8

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	49,841	2431.5	− 2432	−0.5	× 86 / 296	−0.1
4	49,842	2501.4	− 2473	28.4	× 70 / 296	6.7
5	49,843	2537.1	− 2502	35.1	× 60 / 296	7.1
6	49,844	2552.8	− 2531	21.8	× 80 / 296	5.9
Sum, rounded to a whole point						20

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −10, −7, −38, −18, −21, −10, −3, 8, 20 → −8.8
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 3 · 2016→2017: 31 · 2017→2018: 20 · 2018→2019: 3 · 2019→2022: 11 · 2022→2023: 7 · 2023→2024: 11 · 2024→2025: 12 → average 12.3
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 12.3 × 2.66 = 32.7. Upper limit 23.9, lower limit −41.5.

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.