Shackelford 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, 131 of the 264 students who took the math test were English learners.

All students

3rd The average 3rd grader scores 21 points under the grade 3 bar. 2415 vs. 2436.
4th The average 4th grader scores just under the grade 3 bar. 2432 vs. 2436. The 4th-grade bar is 2485.
5th The average 5th grader scores just under the grade 3 bar. 2433 vs. 2436. The 5th-grade bar is 2528.
6th The average 6th grader scores 38 points under the grade 4 bar. 2447 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 30 students Just under the grade 3 bar. 4th 30 students 12 points under the grade 4 bar. 5th 32 students 37 points under the grade 5 bar. 6th 41 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 39 students 34 points under the grade 3 bar. 4th 35 students 38 points under the grade 3 bar. 5th 33 students 60 points under the grade 3 bar. 6th 24 students 65 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	97,127	2338.5	− 2436	−97.5	× 106 / 326	−31.7
4	97,128	2372.0	− 2485	−113	× 76 / 326	−26.3
5	97,131	2387.1	− 2528	−140.9	× 73 / 326	−31.6
6	97,132	2425.4	− 2552	−126.6	× 71 / 326	−27.6
Sum, rounded to a whole point						−117

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	90,084	2342.5	− 2436	−93.5	× 74 / 301	−23
4	90,087	2376.9	− 2485	−108.1	× 78 / 301	−28
5	90,089	2389.7	− 2528	−138.3	× 79 / 301	−36.3
6	90,090	2380.3	− 2552	−171.7	× 70 / 301	−39.9
Sum, rounded to a whole point						−127

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	92,721	2337.3	− 2436	−98.7	× 63 / 297	−20.9
4	92,722	2385.7	− 2485	−99.3	× 68 / 297	−22.7
5	92,725	2400.8	− 2528	−127.2	× 89 / 297	−38.1
6	92,726	2391.2	− 2552	−160.8	× 77 / 297	−41.7
Sum, rounded to a whole point						−123

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	92,919	2348.8	− 2436	−87.2	× 80 / 330	−21.1
4	92,922	2383.9	− 2485	−101.1	× 71 / 330	−21.8
5	92,923	2400.8	− 2528	−127.2	× 98 / 330	−37.8
6	92,926	2398.7	− 2552	−153.3	× 81 / 330	−37.6
Sum, rounded to a whole point						−118

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,579	2356.2	− 2436	−79.8	× 73 / 297	−19.6
4	93,580	2382.9	− 2485	−102.1	× 72 / 297	−24.8
5	93,581	2405.7	− 2528	−122.3	× 66 / 297	−27.2
6	93,582	2420.0	− 2552	−132	× 86 / 297	−38.2
Sum, rounded to a whole point						−110

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	91,594	2328.5	− 2436	−107.5	× 59 / 270	−23.5
4	91,595	2351.3	− 2485	−133.7	× 64 / 270	−31.7
5	91,596	2391.7	− 2528	−136.3	× 78 / 270	−39.4
6	91,597	2391.3	− 2552	−160.7	× 69 / 270	−41.1
Sum, rounded to a whole point						−136

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,808	2389.8	− 2436	−46.2	× 51 / 246	−9.6
4	93,809	2334.1	− 2485	−150.9	× 58 / 246	−35.6
5	93,810	2376.1	− 2528	−151.9	× 67 / 246	−41.4
6	93,811	2416.2	− 2552	−135.8	× 70 / 246	−38.6
Sum, rounded to a whole point						−125

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,714	2374.4	− 2436	−61.6	× 48 / 228	−13
4	93,715	2410.4	− 2485	−74.6	× 53 / 228	−17.3
5	93,716	2398.5	− 2528	−129.5	× 59 / 228	−33.5
6	93,717	2406.8	− 2552	−145.2	× 68 / 228	−43.3
Sum, rounded to a whole point						−107

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,595	2370.8	− 2436	−65.2	× 66 / 248	−17.4
4	93,596	2401.9	− 2485	−83.1	× 65 / 248	−21.8
5	93,597	2448.6	− 2528	−79.4	× 62 / 248	−19.9
6	93,598	2429.7	− 2552	−122.3	× 55 / 248	−27.1
Sum, rounded to a whole point						−86

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,327	2399.5	− 2436	−36.5	× 64 / 261	−9
4	93,328	2420.7	− 2485	−64.3	× 65 / 261	−16
5	93,329	2431.2	− 2528	−96.8	× 65 / 261	−24.1
6	93,330	2458.1	− 2552	−93.9	× 67 / 261	−24.1
Sum, rounded to a whole point						−73

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	92,929	2415.3	− 2436	−20.7	× 69 / 264	−5.4
4	92,930	2432.4	− 2485	−52.6	× 65 / 264	−13
5	92,931	2432.6	− 2528	−95.4	× 65 / 264	−23.5
6	92,932	2446.8	− 2552	−105.2	× 65 / 264	−25.9
Sum, rounded to a whole point						−68

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −117, −127, −123, −118, −110, −136, −125, −107, −86, −73, −68 → −108.2
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: 4 · 2017→2018: 5 · 2018→2019: 8 · 2019→2021: 26 · 2021→2022: 11 · 2022→2023: 18 · 2023→2024: 21 · 2024→2025: 13 · 2025→2026: 5 → average 12.1
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 12.1 × 2.66 = 32.2. Upper limit −76, lower limit −140.4.

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.