Lee Richmond 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	18,773	2379.2	− 2432	−52.8	× 70 / 260	−14.2
4	18,774	2416.9	− 2473	−56.1	× 60 / 260	−12.9
5	18,777	2446.3	− 2502	−55.7	× 62 / 260	−13.3
6	18,778	2494.4	− 2531	−36.6	× 68 / 260	−9.6
Sum, rounded to a whole point						−50

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	17,774	2394.9	− 2432	−37.1	× 58 / 244	−8.8
4	17,776	2430.1	− 2473	−42.9	× 62 / 244	−10.9
5	17,777	2438.9	− 2502	−63.1	× 62 / 244	−16
6	17,780	2489.9	− 2531	−41.1	× 62 / 244	−10.4
Sum, rounded to a whole point						−46

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	18,113	2391.1	− 2432	−40.9	× 64 / 255	−10.3
4	18,115	2425.0	− 2473	−48	× 54 / 255	−10.2
5	18,118	2447.7	− 2502	−54.3	× 65 / 255	−13.8
6	18,120	2495.8	− 2531	−35.2	× 72 / 255	−9.9
Sum, rounded to a whole point						−44

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	18,126	2386.5	− 2432	−45.5	× 63 / 244	−11.7
4	18,129	2442.0	− 2473	−31	× 56 / 244	−7.1
5	18,130	2466.7	− 2502	−35.3	× 63 / 244	−9.1
6	18,133	2515.7	− 2531	−15.3	× 62 / 244	−3.9
Sum, rounded to a whole point						−32

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	18,269	2400.3	− 2432	−31.7	× 67 / 252	−8.4
4	18,270	2406.2	− 2473	−66.8	× 66 / 252	−17.5
5	18,271	2467.1	− 2502	−34.9	× 55 / 252	−7.6
6	18,272	2505.8	− 2531	−25.2	× 64 / 252	−6.4
Sum, rounded to a whole point						−40

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	17,832	2376.5	− 2432	−55.5	× 38 / 220	−9.6
4	17,833	2416.5	− 2473	−56.5	× 30 / 220	−7.7
5	17,834	2449.5	− 2502	−52.5	× 73 / 220	−17.4
6	17,835	2482.1	− 2531	−48.9	× 79 / 220	−17.6
Sum, rounded to a whole point						−52

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	18,310	2377.9	− 2432	−54.1	× 57 / 245	−12.6
4	18,311	2427.1	− 2473	−45.9	× 63 / 245	−11.8
5	18,312	2462.7	− 2502	−39.3	× 64 / 245	−10.3
6	18,313	2514.3	− 2531	−16.7	× 61 / 245	−4.2
Sum, rounded to a whole point						−39

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	18,253	2418.6	− 2432	−13.4	× 42 / 223	−2.5
4	18,254	2443.2	− 2473	−29.8	× 52 / 223	−6.9
5	18,255	2485.3	− 2502	−16.7	× 62 / 223	−4.6
6	18,256	2515.7	− 2531	−15.3	× 67 / 223	−4.6
Sum, rounded to a whole point						−19

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	18,206	2408.9	− 2432	−23.1	× 60 / 224	−6.2
4	18,207	2457.0	− 2473	−16	× 44 / 224	−3.1
5	18,208	2453.9	− 2502	−48.1	× 55 / 224	−11.8
6	18,209	2510.2	− 2531	−20.8	× 65 / 224	−6
Sum, rounded to a whole point						−27

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	18,200	2408.9	− 2432	−23.1	× 61 / 225	−6.3
4	18,201	2496.3	− 2473	23.3	× 60 / 225	6.2
5	18,202	2514.9	− 2502	12.9	× 51 / 225	2.9
6	18,203	2523.2	− 2531	−7.8	× 53 / 225	−1.8
Sum, rounded to a whole point						1

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −50, −46, −44, −32, −40, −52, −39, −19, −27, 1 → −34.8
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: 2 · 2017→2018: 12 · 2018→2019: 8 · 2019→2021: 12 · 2021→2022: 13 · 2022→2023: 20 · 2023→2024: 8 · 2024→2025: 28 → average 11.9
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 11.9 × 2.66 = 31.7. Upper limit −3.1, lower limit −66.5.

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.