Lassen 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 5.

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, 51 of the 161 students who took the math test were English learners.

All students

3rd The average 3rd grader scores 19 points under the grade 3 bar. 2417 vs. 2436.
4th The average 4th grader scores 17 points under the grade 4 bar. 2468 vs. 2485.
5th The average 5th grader scores 38 points under the grade 5 bar. 2490 vs. 2528.

Students fluent in English

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

Grade bars 3rd 31 students 12 points under the grade 3 bar. 4th 33 students Just under the grade 4 bar. 5th 46 students 13 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 16 students 33 points under the grade 3 bar. 4th 23 students 38 points under the grade 4 bar. 5th 12 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	30,904	2425.9	− 2436	−10.1	× 86 / 231	−3.8
4	30,905	2416.9	− 2485	−68.1	× 64 / 231	−18.9
5	30,908	2457.3	− 2528	−70.7	× 81 / 231	−24.8
Sum, rounded to a whole point						−47

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	29,121	2456.0	− 2436	20	× 72 / 230	6.3
4	29,124	2450.8	− 2485	−34.2	× 91 / 230	−13.5
5	29,126	2472.1	− 2528	−55.9	× 67 / 230	−16.3
Sum, rounded to a whole point						−24

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	29,686	2461.6	− 2436	25.6	× 76 / 226	8.6
4	29,688	2455.1	− 2485	−29.9	× 66 / 226	−8.7
5	29,690	2451.5	− 2528	−76.5	× 84 / 226	−28.4
Sum, rounded to a whole point						−29

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	29,736	2429.5	− 2436	−6.5	× 71 / 202	−2.3
4	29,738	2470.0	− 2485	−15	× 68 / 202	−5
5	29,740	2431.5	− 2528	−96.5	× 63 / 202	−30.1
Sum, rounded to a whole point						−37

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	29,911	2431.2	− 2436	−4.8	× 70 / 197	−1.7
4	29,912	2443.9	− 2485	−41.1	× 66 / 197	−13.8
5	29,913	2453.4	− 2528	−74.6	× 61 / 197	−23.1
Sum, rounded to a whole point						−39

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	29,946	2415.6	− 2436	−20.4	× 41 / 161	−5.2
4	29,947	2434.2	− 2485	−50.8	× 62 / 161	−19.6
5	29,948	2457.2	− 2528	−70.8	× 58 / 161	−25.5
Sum, rounded to a whole point						−50

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	30,003	2377.1	− 2436	−58.9	× 73 / 167	−25.7
4	30,004	2463.3	− 2485	−21.7	× 32 / 167	−4.2
5	30,005	2456.3	− 2528	−71.7	× 62 / 167	−26.6
Sum, rounded to a whole point						−57

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	29,869	2402.4	− 2436	−33.6	× 64 / 167	−12.9
4	29,870	2453.3	− 2485	−31.7	× 72 / 167	−13.7
5	29,871	2484.0	− 2528	−44	× 31 / 167	−8.2
Sum, rounded to a whole point						−35

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	29,730	2419.9	− 2436	−16.1	× 60 / 193	−5
4	29,731	2440.0	− 2485	−45	× 60 / 193	−14
5	29,732	2467.9	− 2528	−60.1	× 73 / 193	−22.7
Sum, rounded to a whole point						−42

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	29,718	2416.9	− 2436	−19.1	× 47 / 161	−5.6
4	29,719	2468.4	− 2485	−16.6	× 56 / 161	−5.8
5	29,720	2490.3	− 2528	−37.7	× 58 / 161	−13.6
Sum, rounded to a whole point						−25

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −47, −24, −29, −37, −39, −50, −57, −35, −42, −25 → −38.5
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 23 · 2016→2017: 5 · 2017→2018: 8 · 2018→2019: 2 · 2019→2022: 11 · 2022→2023: 7 · 2023→2024: 22 · 2024→2025: 7 · 2025→2026: 17 → average 11.3
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 11.3 × 2.66 = 30.1. Upper limit −8.4, lower limit −68.6.

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.