Olga L. Reed 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	85,264	2353.9	− 2432	−78.1	× 19 / 131	−11.3
4	85,265	2389.8	− 2473	−83.2	× 24 / 131	−15.2
5	85,268	2450.7	− 2502	−51.3	× 22 / 131	−8.6
6	85,269	2484.1	− 2531	−46.9	× 25 / 131	−9
7	85,272	2546.4	− 2552	−5.6	× 20 / 131	−0.9
8	85,273	2594.8	− 2567	27.8	× 21 / 131	4.5
Sum, rounded to a whole point						−41

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	79,073	2370.0	− 2432	−62	× 21 / 142	−9.2
4	79,075	2411.7	− 2473	−61.3	× 23 / 142	−9.9
5	79,076	2452.0	− 2502	−50	× 25 / 142	−8.8
6	79,078	2482.0	− 2531	−49	× 26 / 142	−9
7	79,080	2533.1	− 2552	−18.9	× 24 / 142	−3.2
8	79,083	2587.3	− 2567	20.3	× 23 / 142	3.3
Sum, rounded to a whole point						−37

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	81,228	2348.3	− 2432	−83.7	× 22 / 134	−13.7
4	81,230	2387.0	− 2473	−86	× 22 / 134	−14.1
5	81,232	2451.3	− 2502	−50.7	× 22 / 134	−8.3
6	81,233	2473.3	− 2531	−57.7	× 23 / 134	−9.9
7	81,236	2499.1	− 2552	−52.9	× 21 / 134	−8.3
8	81,237	2579.0	− 2567	12	× 24 / 134	2.1
Sum, rounded to a whole point						−52

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	81,377	2373.3	− 2432	−58.7	× 23 / 139	−9.7
4	81,378	2378.1	− 2473	−94.9	× 24 / 139	−16.4
5	81,381	2427.5	− 2502	−74.5	× 21 / 139	−11.3
6	81,382	2518.0	− 2531	−13	× 24 / 139	−2.2
7	81,385	2546.6	− 2552	−5.4	× 24 / 139	−0.9
8	81,386	2557.9	− 2567	−9.1	× 23 / 139	−1.5
Sum, rounded to a whole point						−42

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	81,905	2394.6	− 2432	−37.4	× 14 / 131	−4
4	81,906	2430.4	− 2473	−42.6	× 28 / 131	−9.1
5	81,907	2438.8	− 2502	−63.2	× 23 / 131	−11.1
6	81,908	2474.2	− 2531	−56.8	× 21 / 131	−9.1
7	81,909	2553.9	− 2552	1.9	× 22 / 131	0.3
8	81,910	2575.5	− 2567	8.5	× 23 / 131	1.5
Sum, rounded to a whole point						−31

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	82,140	2367.3	− 2432	−64.7	× 24 / 126	−12.3
4	82,141	2386.0	− 2473	−87	× 27 / 126	−18.6
5	82,142	2404.8	− 2502	−97.2	× 18 / 126	−13.9
6	82,143	2572.5	− 2531	41.5	× 11 / 126	3.6
7	82,144	2541.6	− 2552	−10.4	× 24 / 126	−2
8	82,145	2564.2	− 2567	−2.8	× 22 / 126	−0.5
Sum, rounded to a whole point						−44

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	82,100	2348.7	− 2432	−83.3	× 15 / 118	−10.6
4	82,101	2428.7	− 2473	−44.3	× 23 / 118	−8.6
5	82,102	2467.8	− 2502	−34.2	× 25 / 118	−7.2
6	82,103	2467.9	− 2531	−63.1	× 19 / 118	−10.2
7	82,104	2605.7	− 2552	53.7	× 13 / 118	5.9
8	82,105	2565.3	− 2567	−1.7	× 23 / 118	−0.3
Sum, rounded to a whole point						−31

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	82,112	2345.4	− 2432	−86.6	× 15 / 94	−13.8
4	82,113	2429.4	− 2473	−43.6	× 14 / 94	−6.5
5	82,114	2428.2	− 2502	−73.8	× 20 / 94	−15.7
6	82,115	2517.3	− 2531	−13.7	× 26 / 94	−3.8
7	82,116	2543.3	− 2552	−8.7	× 19 / 94	−1.8
Sum, rounded to a whole point						−42

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	81,784	2390.3	− 2432	−41.7	× 17 / 119	−6
4	81,785	2448.4	− 2473	−24.6	× 14 / 119	−2.9
5	81,786	2444.3	− 2502	−57.7	× 16 / 119	−7.8
6	81,787	2474.5	− 2531	−56.5	× 25 / 119	−11.9
7	81,788	2575.4	− 2552	23.4	× 27 / 119	5.3
8	81,789	2572.4	− 2567	5.4	× 20 / 119	0.9
Sum, rounded to a whole point						−22

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −41, −37, −52, −42, −31, −44, −31, −42, −22 → −38
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 4 · 2016→2017: 15 · 2017→2018: 10 · 2018→2019: 11 · 2019→2022: 13 · 2022→2023: 13 · 2023→2024: 11 · 2024→2025: 20 → average 12.1
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 12.1 × 2.66 = 32.2. Upper limit −5.8, lower limit −70.2.

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. From 2014–15, 2015–16, 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.