Tierra Bonita 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.

All students

3rd The average 3rd grader scores 62 points under the grade 3 bar. 2374 vs. 2436.
4th The average 4th grader scores 13 points under the grade 3 bar. 2423 vs. 2436. The 4th-grade bar is 2485.
5th The average 5th grader scores 30 points under the grade 4 bar. 2455 vs. 2485. The 5th-grade bar is 2528.
6th The average 6th grader scores 42 points under the grade 4 bar. 2443 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 81 students 57 points under the grade 3 bar. 4th 74 students Just under the grade 3 bar. 5th 70 students 27 points under the grade 4 bar. 6th 82 students 35 points 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 13 students 92 points under the grade 3 bar. 4th 14 students 50 points under the grade 3 bar. 5th 12 students 46 points under the grade 4 bar. 6th 11 students 50 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	23,007	2378.7	− 2436	−57.3	× 107 / 368	−16.7
4	23,009	2424.6	− 2485	−60.4	× 82 / 368	−13.5
5	23,011	2436.0	− 2528	−92	× 85 / 368	−21.3
6	23,013	2469.0	− 2552	−83	× 94 / 368	−21.2
Sum, rounded to a whole point						−73

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	21,602	2377.2	− 2436	−58.8	× 106 / 376	−16.6
4	21,604	2440.2	− 2485	−44.8	× 93 / 376	−11.1
5	21,606	2451.8	− 2528	−76.2	× 86 / 376	−17.4
6	21,608	2477.1	− 2552	−74.9	× 91 / 376	−18.1
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	22,023	2376.6	− 2436	−59.4	× 91 / 350	−15.4
4	22,025	2429.3	− 2485	−55.7	× 92 / 350	−14.6
5	22,026	2456.3	− 2528	−71.7	× 87 / 350	−17.8
6	22,028	2521.8	− 2552	−30.2	× 80 / 350	−6.9
Sum, rounded to a whole point						−55

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	22,009	2387.0	− 2436	−49	× 89 / 349	−12.5
4	22,011	2423.8	− 2485	−61.2	× 82 / 349	−14.4
5	22,013	2427.2	− 2528	−100.8	× 87 / 349	−25.1
6	22,015	2531.4	− 2552	−20.6	× 91 / 349	−5.4
Sum, rounded to a whole point						−57

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	22,187	2388.4	− 2436	−47.6	× 77 / 318	−11.5
4	22,188	2442.3	− 2485	−42.7	× 74 / 318	−9.9
5	22,189	2455.0	− 2528	−73	× 75 / 318	−17.2
6	22,190	2484.1	− 2552	−67.9	× 92 / 318	−19.6
Sum, rounded to a whole point						−58

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	22,159	2362.2	− 2436	−73.8	× 73 / 398	−13.5
4	22,160	2400.9	− 2485	−84.1	× 102 / 398	−21.6
5	22,161	2426.1	− 2528	−101.9	× 110 / 398	−28.2
6	22,162	2461.4	− 2552	−90.6	× 113 / 398	−25.7
Sum, rounded to a whole point						−89

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	22,130	2375.1	− 2436	−60.9	× 87 / 379	−14
4	22,131	2387.2	− 2485	−97.8	× 95 / 379	−24.5
5	22,132	2433.9	− 2528	−94.1	× 95 / 379	−23.6
6	22,133	2465.4	− 2552	−86.6	× 102 / 379	−23.3
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	21,984	2375.8	− 2436	−60.2	× 78 / 334	−14.1
4	21,985	2415.3	− 2485	−69.7	× 89 / 334	−18.6
5	21,986	2407.8	− 2528	−120.2	× 86 / 334	−30.9
6	21,987	2455.5	− 2552	−96.5	× 81 / 334	−23.4
Sum, rounded to a whole point						−87

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	21,891	2377.7	− 2436	−58.3	× 80 / 349	−13.4
4	21,892	2405.9	− 2485	−79.1	× 92 / 349	−20.9
5	21,893	2453.6	− 2528	−74.4	× 94 / 349	−20
6	21,894	2447.4	− 2552	−104.6	× 83 / 349	−24.9
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	21,949	2374.3	− 2436	−61.7	× 94 / 357	−16.2
4	21,950	2422.8	− 2485	−62.2	× 88 / 357	−15.3
5	21,951	2455.0	− 2528	−73	× 82 / 357	−16.8
6	21,952	2442.6	− 2552	−109.4	× 93 / 357	−28.5
Sum, rounded to a whole point						−77

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −73, −63, −55, −57, −58, −89, −85, −87, −79, −77 → −72.3
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 10 · 2016→2017: 8 · 2017→2018: 2 · 2018→2019: 1 · 2019→2022: 31 · 2022→2023: 4 · 2023→2024: 2 · 2024→2025: 8 · 2025→2026: 2 → average 7.6
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 7.6 × 2.66 = 20.2. Upper limit −52.1, lower limit −92.5.

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.