Rustic Lane 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, 127 of the 313 students who took the math test were English learners.

All students

3rd The average 3rd grader scores 70 points under the grade 3 bar. 2366 vs. 2436.
4th The average 4th grader scores just under the grade 3 bar. 2436 vs. 2436. The 4th-grade bar is 2485.
5th The average 5th grader scores 15 points under the grade 3 bar. 2421 vs. 2436. The 5th-grade bar is 2528.
6th The average 6th grader scores 48 points under the grade 4 bar. 2437 vs. 2485. The 6th-grade bar is 2552.

Students fluent in English

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

Grade bars 3rd 43 students 65 points under the grade 3 bar. 4th 59 students 33 points under the grade 4 bar. 5th 44 students Just under the grade 3 bar. 6th 40 students Just under the grade 4 bar.

English learners

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

Grade bars 3rd 33 students 77 points under the grade 3 bar. 4th 31 students 31 points under the grade 3 bar. 5th 23 students 33 points under the grade 3 bar. 6th 40 students 40 points under the grade 3 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
3	56,787	2385.2	− 2436	−50.8	× 102 / 374	−13.9
4	56,789	2433.2	− 2485	−51.8	× 83 / 374	−11.5
5	56,791	2439.7	− 2528	−88.3	× 90 / 374	−21.2
6	56,793	2501.7	− 2552	−50.3	× 99 / 374	−13.3
Sum, rounded to a whole point						−60

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	52,730	2413.0	− 2436	−23	× 73 / 374	−4.5
4	52,732	2427.6	− 2485	−57.4	× 110 / 374	−16.9
5	52,733	2447.8	− 2528	−80.2	× 91 / 374	−19.5
6	52,736	2469.3	− 2552	−82.7	× 100 / 374	−22.1
Sum, rounded to a whole point						−63

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	54,249	2406.5	− 2436	−29.5	× 102 / 398	−7.6
4	54,250	2453.2	− 2485	−31.8	× 86 / 398	−6.9
5	54,253	2434.1	− 2528	−93.9	× 108 / 398	−25.5
6	54,255	2465.8	− 2552	−86.2	× 102 / 398	−22.1
Sum, rounded to a whole point						−62

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	54,361	2411.0	− 2436	−25	× 82 / 375	−5.5
4	54,363	2438.8	− 2485	−46.2	× 100 / 375	−12.3
5	54,365	2454.1	− 2528	−73.9	× 81 / 375	−16
6	54,367	2448.5	− 2552	−103.5	× 112 / 375	−30.9
Sum, rounded to a whole point						−65

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	54,605	2409.0	− 2436	−27	× 75 / 341	−5.9
4	54,606	2458.7	− 2485	−26.3	× 85 / 341	−6.6
5	54,607	2454.7	− 2528	−73.3	× 98 / 341	−21.1
6	54,608	2497.6	− 2552	−54.4	× 83 / 341	−13.2
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	54,641	2378.7	− 2436	−57.3	× 57 / 308	−10.6
4	54,642	2431.4	− 2485	−53.6	× 75 / 308	−13.1
5	54,643	2406.0	− 2528	−122	× 91 / 308	−36
6	54,644	2450.9	− 2552	−101.1	× 85 / 308	−27.9
Sum, rounded to a whole point						−88

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	54,592	2392.7	− 2436	−43.3	× 64 / 298	−9.3
4	54,593	2415.2	− 2485	−69.8	× 61 / 298	−14.3
5	54,594	2439.5	− 2528	−88.5	× 85 / 298	−25.2
6	54,595	2428.1	− 2552	−123.9	× 88 / 298	−36.6
Sum, rounded to a whole point						−85

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	54,462	2376.4	− 2436	−59.6	× 72 / 291	−14.7
4	54,463	2395.7	− 2485	−89.3	× 67 / 291	−20.6
5	54,464	2394.5	− 2528	−133.5	× 58 / 291	−26.6
6	54,465	2464.3	− 2552	−87.7	× 94 / 291	−28.3
Sum, rounded to a whole point						−90

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	54,202	2400.7	− 2436	−35.3	× 88 / 282	−11
4	54,203	2403.6	− 2485	−81.4	× 67 / 282	−19.3
5	54,204	2420.8	− 2528	−107.2	× 76 / 282	−28.9
6	54,205	2444.8	− 2552	−107.2	× 51 / 282	−19.4
Sum, rounded to a whole point						−79

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	54,139	2365.8	− 2436	−70.2	× 76 / 313	−17
4	54,140	2435.7	− 2485	−49.3	× 90 / 313	−14.2
5	54,141	2421.0	− 2528	−107	× 67 / 313	−22.9
6	54,142	2437.2	− 2552	−114.8	× 80 / 313	−29.3
Sum, rounded to a whole point						−83

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −60, −63, −62, −65, −47, −88, −85, −90, −79, −83 → −72.2
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 3 · 2016→2017: 1 · 2017→2018: 3 · 2018→2019: 18 · 2019→2022: 41 · 2022→2023: 3 · 2023→2024: 5 · 2024→2025: 11 · 2025→2026: 4 → average 9.9
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 9.9 × 2.66 = 26.3. Upper limit −45.9, lower limit −98.5.

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.