Robertson Road 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, 64 of the 149 students who took the math test were English learners.

All students

3rd The average 3rd grader scores 20 points under the grade 3 bar. 2416 vs. 2436.
4th The average 4th grader scores 46 points under the grade 4 bar. 2439 vs. 2485.
5th The average 5th grader scores 32 points under the grade 4 bar. 2453 vs. 2485. The 5th-grade bar is 2528.
6th The average 6th grader scores just under the grade 3 bar. 2431 vs. 2436. 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 28 students Just under the grade 3 bar. 4th 18 students 37 points under the grade 4 bar. 5th 21 students Just under the grade 4 bar. 6th 18 students 37 points under the grade 5 bar.

English learners

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

Grade bars 3rd 21 students 39 points under the grade 3 bar. 4th 14 students 10 points under the grade 3 bar. 5th 14 students 26 points under the grade 3 bar. 6th 15 students 78 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	97,100	2405.1	− 2436	−30.9	× 79 / 251	−9.7
4	97,103	2419.4	− 2485	−65.6	× 72 / 251	−18.8
5	97,104	2459.8	− 2528	−68.2	× 64 / 251	−17.4
6	97,107	2500.1	− 2552	−51.9	× 36 / 251	−7.4
Sum, rounded to a whole point						−53

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	90,059	2360.0	− 2436	−76	× 50 / 241	−15.8
4	90,061	2444.9	− 2485	−40.1	× 77 / 241	−12.8
5	90,063	2422.6	− 2528	−105.4	× 61 / 241	−26.7
6	90,065	2526.8	− 2552	−25.2	× 53 / 241	−5.5
Sum, rounded to a whole point						−61

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	92,694	2416.8	− 2436	−19.2	× 50 / 242	−4
4	92,697	2414.8	− 2485	−70.2	× 60 / 242	−17.4
5	92,698	2430.2	− 2528	−97.8	× 69 / 242	−27.9
6	92,700	2447.3	− 2552	−104.7	× 63 / 242	−27.3
Sum, rounded to a whole point						−77

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	92,894	2409.0	− 2436	−27	× 51 / 229	−6
4	92,895	2435.8	− 2485	−49.2	× 54 / 229	−11.6
5	92,898	2407.6	− 2528	−120.4	× 57 / 229	−30
6	92,899	2474.2	− 2552	−77.8	× 67 / 229	−22.8
Sum, rounded to a whole point						−70

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,553	2414.3	− 2436	−21.7	× 46 / 201	−5
4	93,554	2473.7	− 2485	−11.3	× 46 / 201	−2.6
5	93,555	2441.3	− 2528	−86.7	× 52 / 201	−22.4
6	93,556	2494.1	− 2552	−57.9	× 57 / 201	−16.4
Sum, rounded to a whole point						−46

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	91,568	2360.0	− 2436	−76	× 40 / 191	−15.9
4	91,569	2412.3	− 2485	−72.7	× 52 / 191	−19.8
5	91,570	2402.5	− 2528	−125.5	× 48 / 191	−31.5
6	91,571	2448.2	− 2552	−103.8	× 51 / 191	−27.7
Sum, rounded to a whole point						−95

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,782	2362.6	− 2436	−73.4	× 47 / 190	−18.2
4	93,783	2445.3	− 2485	−39.7	× 36 / 190	−7.5
5	93,784	2437.3	− 2528	−90.7	× 60 / 190	−28.6
6	93,785	2487.0	− 2552	−65	× 47 / 190	−16.1
Sum, rounded to a whole point						−70

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,688	2406.7	− 2436	−29.3	× 41 / 181	−6.6
4	93,689	2409.4	− 2485	−75.6	× 43 / 181	−18
5	93,690	2431.7	− 2528	−96.3	× 43 / 181	−22.9
6	93,691	2490.6	− 2552	−61.4	× 54 / 181	−18.3
Sum, rounded to a whole point						−66

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,569	2399.9	− 2436	−36.1	× 45 / 161	−10.1
4	93,570	2466.1	− 2485	−18.9	× 40 / 161	−4.7
5	93,571	2414.1	− 2528	−113.9	× 33 / 161	−23.3
6	93,572	2451.0	− 2552	−101	× 43 / 161	−27
Sum, rounded to a whole point						−65

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,301	2404.7	− 2436	−31.3	× 40 / 153	−8.2
4	93,302	2428.1	− 2485	−56.9	× 43 / 153	−16
5	93,303	2450.1	− 2528	−77.9	× 36 / 153	−18.3
6	93,304	2494.1	− 2552	−57.9	× 34 / 153	−12.9
Sum, rounded to a whole point						−55

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	92,903	2416.3	− 2436	−19.7	× 49 / 149	−6.5
4	92,904	2438.7	− 2485	−46.3	× 32 / 149	−9.9
5	92,905	2452.8	− 2528	−75.2	× 35 / 149	−17.7
6	92,906	2430.6	− 2552	−121.4	× 33 / 149	−26.9
Sum, rounded to a whole point						−61

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −53, −61, −77, −70, −46, −95, −70, −66, −65, −55, −61 → −65.4
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 8 · 2016→2017: 16 · 2017→2018: 7 · 2018→2019: 24 · 2019→2021: 49 · 2021→2022: 25 · 2022→2023: 4 · 2023→2024: 1 · 2024→2025: 10 · 2025→2026: 6 → average 15
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 15 × 2.66 = 39.9. Upper limit −25.5, lower limit −105.3.

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.