Alder Creek Middle: 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.

Measured against the grade bars

The state's math test uses one scale for every grade, so a score means the same thing in grade 3 as in grade 8.

All students

6th The average 6th grader scores just under the grade 6 bar. 2551 vs. 2552.
7th The average 7th grader meets the grade 7 bar. 2578 vs. 2567.
8th The average 8th grader meets the grade 8 bar. 2609 vs. 2586.

Students fluent in English

Math with English out of the way. Includes students who have only ever spoken English.

Grade bars 6th 163 students Meets the grade 6 bar. 8th 176 students Meets the grade 8 bar.

English learners

Students leave this group as they become fluent, so its average stays low even where they learn well.

Grade bars 6th 14 students Just under the grade 3 bar. 8th 12 students 23 points under the grade 4 bar.

the group's average that grade's own bar the distance between

2026 results. "Meets standard" is the state's mark for being on track for that grade. The state leaves out any group of ten students or fewer, so a grade may be missing from the charts.

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
6	54,432	2523.9	− 2552	−28.1	× 176 / 490	−10.1
7	54,434	2541.6	− 2567	−25.4	× 149 / 490	−7.7
8	54,436	2561.1	− 2586	−24.9	× 165 / 490	−8.4
Sum, rounded to a whole point						−26

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	50,564	2554.8	− 2552	2.8	× 150 / 485	0.9
7	50,566	2551.9	− 2567	−15.1	× 185 / 485	−5.8
8	50,568	2596.9	− 2586	10.9	× 150 / 485	3.4
Sum, rounded to a whole point						−2

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	52,006	2563.6	− 2552	11.6	× 172 / 524	3.8
7	52,007	2586.9	− 2567	19.9	× 168 / 524	6.4
8	52,010	2605.4	− 2586	19.4	× 184 / 524	6.8
Sum, rounded to a whole point						17

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	52,050	2532.6	− 2552	−19.4	× 167 / 507	−6.4
7	52,051	2582.8	− 2567	15.8	× 177 / 507	5.5
8	52,054	2620.7	− 2586	34.7	× 163 / 507	11.2
Sum, rounded to a whole point						10

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	52,236	2543.6	− 2552	−8.4	× 175 / 527	−2.8
7	52,237	2552.9	− 2567	−14.1	× 180 / 527	−4.8
8	52,238	2616.4	− 2586	30.4	× 172 / 527	9.9
Sum, rounded to a whole point						2

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	51,017	2510.3	− 2552	−41.7	× 177 / 543	−13.6
7	51,018	2531.1	− 2567	−35.9	× 212 / 543	−14
8	51,019	2564.5	− 2586	−21.5	× 154 / 543	−6.1
Sum, rounded to a whole point						−34

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	52,196	2544.2	− 2552	−7.8	× 161 / 549	−2.3
7	52,197	2533.7	− 2567	−33.3	× 195 / 549	−11.8
8	52,198	2570.2	− 2586	−15.8	× 193 / 549	−5.6
Sum, rounded to a whole point						−20

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	52,157	2541.5	− 2552	−10.5	× 167 / 517	−3.4
7	52,158	2551.2	− 2567	−15.8	× 166 / 517	−5.1
8	52,159	2573.0	− 2586	−13	× 184 / 517	−4.6
Sum, rounded to a whole point						−13

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	51,999	2538.9	− 2552	−13.1	× 177 / 496	−4.7
7	52,000	2556.6	− 2567	−10.4	× 164 / 496	−3.4
8	52,001	2585.5	− 2586	−0.5	× 155 / 496	−0.2
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
6	51,771	2551.9	− 2552	−0.1	× 169 / 518	0
7	51,772	2577.2	− 2567	10.2	× 187 / 518	3.7
8	51,773	2607.0	− 2586	21	× 162 / 518	6.6
Sum, rounded to a whole point						10

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	51,660	2551.4	− 2552	−0.6	× 177 / 532	−0.2
7	51,661	2578.1	− 2567	11.1	× 167 / 532	3.5
8	51,662	2609.0	− 2586	23	× 188 / 532	8.1
Sum, rounded to a whole point						11

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −26, −2, 17, 10, 2, −34, −20, −13, −8, 10, 11 → −4.8
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 24 · 2016→2017: 19 · 2017→2018: 7 · 2018→2019: 8 · 2019→2021: 36 · 2021→2022: 14 · 2022→2023: 7 · 2023→2024: 5 · 2024→2025: 18 · 2025→2026: 1 → average 13.9
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 13.9 × 2.66 = 37. Upper limit 32.2, lower limit −41.8.

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.