San Lorenzo Valley Middle: 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 8.

6th The average 6th grader scores just under the grade 5 bar. 2523 vs. 2528. The 6th-grade bar is 2552.
7th The average 7th grader scores just under the grade 6 bar. 2549 vs. 2552. The 7th-grade bar is 2567.
8th The average 8th grader scores 11 points under the grade 8 bar. 2575 vs. 2586.

2026 results. "Meets standard" is the state's mark for being on track for that grade.

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
6	90,370	2520.4	− 2552	−31.6	× 149 / 465	−10.1
7	90,371	2549.6	− 2567	−17.4	× 178 / 465	−6.7
8	90,374	2550.3	− 2586	−35.7	× 138 / 465	−10.6
Sum, rounded to a whole point						−27

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	83,845	2537.6	− 2552	−14.4	× 178 / 460	−5.6
7	83,847	2571.3	− 2567	4.3	× 139 / 460	1.3
8	83,850	2561.3	− 2586	−24.7	× 143 / 460	−7.7
Sum, rounded to a whole point						−12

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	86,162	2518.7	− 2552	−33.3	× 158 / 464	−11.3
7	86,163	2527.5	− 2567	−39.5	× 170 / 464	−14.5
8	86,166	2528.1	− 2586	−57.9	× 136 / 464	−17
Sum, rounded to a whole point						−43

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	86,394	2507.0	− 2552	−45	× 167 / 484	−15.5
7	86,395	2547.9	− 2567	−19.1	× 153 / 484	−6
8	86,398	2511.8	− 2586	−74.2	× 164 / 484	−25.1
Sum, rounded to a whole point						−47

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	86,993	2532.0	− 2552	−20	× 168 / 505	−6.7
7	86,994	2500.1	− 2567	−66.9	× 182 / 505	−24.1
8	86,995	2532.7	− 2586	−53.3	× 155 / 505	−16.4
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
6	87,264	2484.4	− 2552	−67.6	× 134 / 352	−25.7
7	87,265	2519.1	− 2567	−47.9	× 117 / 352	−15.9
8	87,266	2536.7	− 2586	−49.3	× 101 / 352	−14.1
Sum, rounded to a whole point						−56

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	87,182	2495.1	− 2552	−56.9	× 105 / 352	−17
7	87,183	2526.4	− 2567	−40.6	× 129 / 352	−14.9
8	87,184	2520.7	− 2586	−65.3	× 118 / 352	−21.9
Sum, rounded to a whole point						−54

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	87,160	2480.8	− 2552	−71.2	× 158 / 408	−27.6
7	87,161	2539.5	− 2567	−27.5	× 117 / 408	−7.9
8	87,162	2503.9	− 2586	−82.1	× 133 / 408	−26.8
Sum, rounded to a whole point						−62

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	86,844	2503.7	− 2552	−48.3	× 116 / 387	−14.5
7	86,845	2540.1	− 2567	−26.9	× 153 / 387	−10.6
8	86,846	2555.3	− 2586	−30.7	× 118 / 387	−9.4
Sum, rounded to a whole point						−34

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	86,569	2523.0	− 2552	−29	× 138 / 395	−10.1
7	86,570	2549.2	− 2567	−17.8	× 108 / 395	−4.9
8	86,571	2574.8	− 2586	−11.2	× 149 / 395	−4.2
Sum, rounded to a whole point						−19

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −27, −12, −43, −47, −47, −56, −54, −62, −34, −19 → −40.1
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 15 · 2016→2017: 31 · 2017→2018: 4 · 2018→2019: 0 · 2019→2022: 9 · 2022→2023: 2 · 2023→2024: 8 · 2024→2025: 28 · 2025→2026: 15 → average 12.4
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 12.4 × 2.66 = 33. Upper limit −7.1, lower limit −73.1.

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.