Anderson Valley 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.

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 6.

Many students here are still learning English. The math test is written in English, with some translation help, and many of its questions are word problems. In 2026, 32 of the 90 students who took the math test were English learners.

3rd The average 3rd grader scores 65 points under the grade 3 bar. 2372 vs. 2436.
4th The average 4th grader scores 18 points under the grade 4 bar. 2467 vs. 2485.
5th The average 5th grader scores 14 points under the grade 3 bar. 2422 vs. 2436. The 5th-grade bar is 2528.
6th The average 6th grader scores 43 points under the grade 4 bar. 2442 vs. 2485. The 6th-grade bar is 2552.

2026 results. "Meets standard" is the state's mark for being on track for that grade.

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	43,133	2420.8	− 2436	−15.2	× 42 / 149	−4.3
4	43,136	2436.9	− 2485	−48.1	× 43 / 149	−13.9
5	43,137	2470.4	− 2528	−57.6	× 34 / 149	−13.1
6	43,140	2552.7	− 2552	0.7	× 30 / 149	0.1
Sum, rounded to a whole point						−31

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	39,825	2410.9	− 2436	−25.1	× 37 / 157	−5.9
4	39,828	2438.7	− 2485	−46.3	× 39 / 157	−11.5
5	39,829	2460.4	− 2528	−67.6	× 50 / 157	−21.5
6	39,831	2497.7	− 2552	−54.3	× 31 / 157	−10.7
Sum, rounded to a whole point						−50

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	40,849	2397.8	− 2436	−38.2	× 36 / 157	−8.8
4	40,851	2428.8	− 2485	−56.2	× 37 / 157	−13.2
5	40,852	2519.3	− 2528	−8.7	× 37 / 157	−2.1
6	40,855	2480.8	− 2552	−71.2	× 47 / 157	−21.3
Sum, rounded to a whole point						−45

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	40,865	2423.8	− 2436	−12.2	× 31 / 149	−2.5
4	40,868	2456.7	− 2485	−28.3	× 38 / 149	−7.2
5	40,869	2476.6	− 2528	−51.4	× 39 / 149	−13.5
6	40,872	2539.3	− 2552	−12.7	× 41 / 149	−3.5
Sum, rounded to a whole point						−27

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	41,016	2386.4	− 2436	−49.6	× 40 / 147	−13.5
4	41,017	2466.6	− 2485	−18.4	× 29 / 147	−3.6
5	41,018	2479.5	− 2528	−48.5	× 40 / 147	−13.2
6	41,019	2486.5	− 2552	−65.5	× 38 / 147	−16.9
Sum, rounded to a whole point						−47

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	40,781	2361.5	− 2436	−74.5	× 27 / 134	−15
4	40,782	2362.6	− 2485	−122.4	× 33 / 134	−30.1
5	40,783	2425.1	− 2528	−102.9	× 36 / 134	−27.6
6	40,784	2442.8	− 2552	−109.2	× 38 / 134	−31
Sum, rounded to a whole point						−104

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	40,812	2344.4	− 2436	−91.6	× 20 / 101	−18.1
4	40,813	2396.7	− 2485	−88.3	× 23 / 101	−20.1
5	40,814	2397.6	− 2528	−130.4	× 29 / 101	−37.4
6	40,815	2476.4	− 2552	−75.6	× 29 / 101	−21.7
Sum, rounded to a whole point						−97

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	40,635	2388.7	− 2436	−47.3	× 29 / 97	−14.1
4	40,636	2357.7	− 2485	−127.3	× 18 / 97	−23.6
5	40,637	2399.5	− 2528	−128.5	× 21 / 97	−27.8
6	40,638	2410.1	− 2552	−141.9	× 29 / 97	−42.4
Sum, rounded to a whole point						−108

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	40,420	2401.6	− 2436	−34.4	× 19 / 91	−7.2
4	40,421	2392.6	− 2485	−92.4	× 29 / 91	−29.4
5	40,422	2413.2	− 2528	−114.8	× 19 / 91	−24
6	40,423	2428.8	− 2552	−123.2	× 24 / 91	−32.5
Sum, rounded to a whole point						−93

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	40,330	2371.5	− 2436	−64.5	× 25 / 90	−17.9
4	40,331	2466.7	− 2485	−18.3	× 16 / 90	−3.3
5	40,332	2422.2	− 2528	−105.8	× 30 / 90	−35.3
6	40,333	2441.7	− 2552	−110.3	× 19 / 90	−23.3
Sum, rounded to a whole point						−80

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −31, −50, −45, −27, −47, −104, −97, −108, −93, −80 → −68.2
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 19 · 2016→2017: 5 · 2017→2018: 18 · 2018→2019: 20 · 2019→2022: 57 · 2022→2023: 7 · 2023→2024: 11 · 2024→2025: 15 · 2025→2026: 13 → average 18.3
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 18.3 × 2.66 = 48.7. Upper limit −19.5, lower limit −116.9.

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.