Adams Elementary: math

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	85,504	2430.1	− 2436	−5.9	× 78 / 295	−1.6
4	85,505	2455.9	− 2485	−29.1	× 79 / 295	−7.8
5	85,508	2468.8	− 2528	−59.2	× 76 / 295	−15.3
6	85,509	2468.6	− 2552	−83.4	× 62 / 295	−17.5
Sum, rounded to a whole point						−42

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	79,316	2463.6	− 2436	27.6	× 73 / 292	6.9
4	79,319	2470.0	− 2485	−15	× 73 / 292	−3.8
5	79,320	2495.7	− 2528	−32.3	× 73 / 292	−8.1
6	79,323	2476.9	− 2552	−75.1	× 73 / 292	−18.8
Sum, rounded to a whole point						−24

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	81,485	2469.1	− 2436	33.1	× 82 / 284	9.6
4	81,488	2497.7	− 2485	12.7	× 68 / 284	3
5	81,489	2513.4	− 2528	−14.6	× 69 / 284	−3.5
6	81,492	2510.8	− 2552	−41.2	× 65 / 284	−9.4
Sum, rounded to a whole point						0

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	81,676	2467.1	− 2436	31.1	× 83 / 315	8.2
4	81,679	2462.8	− 2485	−22.2	× 86 / 315	−6.1
5	81,680	2526.0	− 2528	−2	× 75 / 315	−0.5
6	81,683	2518.7	− 2552	−33.3	× 71 / 315	−7.5
Sum, rounded to a whole point						−6

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	82,196	2454.3	− 2436	18.3	× 70 / 307	4.2
4	82,197	2490.3	− 2485	5.3	× 82 / 307	1.4
5	82,198	2499.7	− 2528	−28.3	× 87 / 307	−8
6	82,199	2555.5	− 2552	3.5	× 68 / 307	0.8
Sum, rounded to a whole point						−2

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	82,403	2421.8	− 2436	−14.2	× 81 / 298	−3.9
4	82,404	2455.7	− 2485	−29.3	× 74 / 298	−7.3
5	82,405	2478.9	− 2528	−49.1	× 75 / 298	−12.4
6	82,406	2504.0	− 2552	−48	× 68 / 298	−11
Sum, rounded to a whole point						−34

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	82,369	2459.0	− 2436	23	× 70 / 294	5.5
4	82,370	2470.3	− 2485	−14.7	× 78 / 294	−3.9
5	82,371	2478.2	− 2528	−49.8	× 74 / 294	−12.5
6	82,372	2535.8	− 2552	−16.2	× 72 / 294	−4
Sum, rounded to a whole point						−15

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	82,383	2441.7	− 2436	5.7	× 68 / 293	1.3
4	82,384	2489.2	− 2485	4.2	× 71 / 293	1
5	82,385	2480.7	− 2528	−47.3	× 83 / 293	−13.4
6	82,386	2532.4	− 2552	−19.6	× 71 / 293	−4.7
Sum, rounded to a whole point						−16

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	82,061	2434.1	− 2436	−1.9	× 58 / 269	−0.4
4	82,062	2476.2	− 2485	−8.8	× 67 / 269	−2.2
5	82,063	2502.7	− 2528	−25.3	× 66 / 269	−6.2
6	82,064	2528.8	− 2552	−23.2	× 78 / 269	−6.7
Sum, rounded to a whole point						−16

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −42, −24, 0, −6, −2, −34, −15, −16, −16 → −17.2
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 18 · 2016→2017: 24 · 2017→2018: 6 · 2018→2019: 4 · 2019→2022: 32 · 2022→2023: 19 · 2023→2024: 1 · 2024→2025: 0 → average 13
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 13 × 2.66 = 34.6. Upper limit 17.4, lower limit −51.8.

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