Gridley 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	5,204	2419.5	− 2432	−12.5	× 144 / 1068	−1.7
4	5,206	2469.3	− 2473	−3.7	× 154 / 1068	−0.5
5	5,208	2480.6	− 2502	−21.4	× 160 / 1068	−3.2
6	5,210	2491.8	− 2531	−39.2	× 163 / 1068	−6
7	5,212	2534.2	− 2552	−17.8	× 137 / 1068	−2.3
8	5,213	2552.2	− 2567	−14.8	× 144 / 1068	−2
11	5,216	2589.2	− 2583	6.2	× 166 / 1068	1
Sum, rounded to a whole point						−15

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	4,681	2412.4	− 2432	−19.6	× 147 / 1039	−2.8
4	4,683	2479.7	− 2473	6.7	× 142 / 1039	0.9
5	4,684	2511.9	− 2502	9.9	× 141 / 1039	1.3
6	4,686	2502.5	− 2531	−28.5	× 154 / 1039	−4.2
7	4,689	2525.9	− 2552	−26.1	× 168 / 1039	−4.2
8	4,690	2555.5	− 2567	−11.5	× 142 / 1039	−1.6
11	4,693	2605.5	− 2583	22.5	× 145 / 1039	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	4,778	2411.6	− 2432	−20.4	× 138 / 1026	−2.7
4	4,780	2455.2	− 2473	−17.8	× 148 / 1026	−2.6
5	4,783	2505.6	− 2502	3.6	× 139 / 1026	0.5
6	4,784	2522.2	− 2531	−8.8	× 152 / 1026	−1.3
7	4,787	2528.3	− 2552	−23.7	× 155 / 1026	−3.6
8	4,788	2535.4	− 2567	−31.6	× 166 / 1026	−5.1
11	4,791	2625.4	− 2583	42.4	× 128 / 1026	5.3
Sum, rounded to a whole point						−10

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	4,767	2435.7	− 2432	3.7	× 136 / 1034	0.5
4	4,768	2465.9	− 2473	−7.1	× 144 / 1034	−1
5	4,771	2504.5	− 2502	2.5	× 147 / 1034	0.4
6	4,772	2531.4	− 2531	0.4	× 140 / 1034	0.1
7	4,775	2533.6	− 2552	−18.4	× 148 / 1034	−2.6
8	4,776	2544.8	− 2567	−22.2	× 150 / 1034	−3.2
11	4,779	2593.4	− 2583	10.4	× 169 / 1034	1.7
Sum, rounded to a whole point						−4

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	4,792	2425.7	− 2432	−6.3	× 162 / 1063	−1
4	4,793	2472.8	− 2473	−0.2	× 144 / 1063	0
5	4,794	2488.8	− 2502	−13.2	× 144 / 1063	−1.8
6	4,795	2527.1	− 2531	−3.9	× 153 / 1063	−0.6
7	4,796	2562.8	− 2552	10.8	× 148 / 1063	1.5
8	4,797	2544.8	− 2567	−22.2	× 152 / 1063	−3.2
11	4,798	2538.0	− 2583	−45	× 160 / 1063	−6.8
Sum, rounded to a whole point						−12

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	4,576	2394.0	− 2432	−38	× 127 / 974	−5
4	4,577	2448.5	− 2473	−24.5	× 125 / 974	−3.1
5	4,578	2497.3	− 2502	−4.7	× 145 / 974	−0.7
6	4,579	2502.8	− 2531	−28.2	× 139 / 974	−4
7	4,580	2547.8	− 2552	−4.2	× 145 / 974	−0.6
8	4,581	2575.6	− 2567	8.6	× 141 / 974	1.2
11	4,582	2609.7	− 2583	26.7	× 152 / 974	4.2
Sum, rounded to a whole point						−8

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	4,651	2403.5	− 2432	−28.5	× 136 / 1024	−3.8
4	4,652	2459.5	− 2473	−13.5	× 139 / 1024	−1.8
5	4,653	2475.3	− 2502	−26.7	× 129 / 1024	−3.4
6	4,654	2527.6	− 2531	−3.4	× 155 / 1024	−0.5
7	4,655	2552.5	− 2552	0.5	× 141 / 1024	0.1
8	4,656	2550.6	− 2567	−16.4	× 149 / 1024	−2.4
11	4,657	2615.5	− 2583	32.5	× 175 / 1024	5.6
Sum, rounded to a whole point						−6

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	4,639	2403.1	− 2432	−28.9	× 125 / 990	−3.6
4	4,640	2454.9	− 2473	−18.1	× 135 / 990	−2.5
5	4,641	2500.6	− 2502	−1.4	× 144 / 990	−0.2
6	4,642	2515.0	− 2531	−16	× 129 / 990	−2.1
7	4,643	2554.3	− 2552	2.3	× 153 / 990	0.4
8	4,644	2550.3	− 2567	−16.7	× 146 / 990	−2.5
11	4,645	2621.6	− 2583	38.6	× 158 / 990	6.2
Sum, rounded to a whole point						−4

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	4,596	2387.1	− 2432	−44.9	× 140 / 974	−6.5
4	4,597	2456.4	− 2473	−16.6	× 126 / 974	−2.1
5	4,598	2482.4	− 2502	−19.6	× 136 / 974	−2.7
6	4,599	2504.3	− 2531	−26.7	× 139 / 974	−3.8
7	4,600	2544.6	− 2552	−7.4	× 128 / 974	−1
8	4,601	2542.5	− 2567	−24.5	× 152 / 974	−3.8
11	4,602	2646.1	− 2583	63.1	× 153 / 974	9.9
Sum, rounded to a whole point						−10

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	4,560	2394.1	− 2432	−37.9	× 142 / 996	−5.4
4	4,561	2448.5	− 2473	−24.5	× 143 / 996	−3.5
5	4,562	2486.2	− 2502	−15.8	× 127 / 996	−2
6	4,563	2516.4	− 2531	−14.6	× 140 / 996	−2.1
7	4,564	2556.0	− 2552	4	× 140 / 996	0.6
8	4,565	2558.5	− 2567	−8.5	× 132 / 996	−1.1
11	4,566	2635.3	− 2583	52.3	× 172 / 996	9
Sum, rounded to a whole point						−5

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	4,550	2392.9	− 2432	−39.1	× 132 / 1002	−5.2
4	4,551	2440.1	− 2473	−32.9	× 147 / 1002	−4.8
5	4,552	2485.5	− 2502	−16.5	× 142 / 1002	−2.3
6	4,553	2501.6	− 2531	−29.4	× 134 / 1002	−3.9
7	4,554	2541.0	− 2552	−11	× 142 / 1002	−1.6
8	4,555	2540.7	− 2567	−26.3	× 144 / 1002	−3.8
11	4,556	2636.4	− 2583	53.4	× 161 / 1002	8.6
Sum, rounded to a whole point						−13

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −15, −7, −10, −4, −12, −8, −6, −4, −10, −5, −13 → −8.5
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 8 · 2016→2017: 3 · 2017→2018: 6 · 2018→2019: 8 · 2019→2021: 4 · 2021→2022: 2 · 2022→2023: 2 · 2023→2024: 6 · 2024→2025: 5 · 2025→2026: 8 → average 5.2
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 5.2 × 2.66 = 13.8. Upper limit 5.3, lower limit −22.3.

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 Gridley Unified