Diamond Point Elementary: english

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 English test uses one scale for every grade, so a score means the same thing in grade 3 as in grade 6.

3rd The average 3rd grader scores 10 points under the grade 3 bar. 2422 vs. 2432.
4th The average 4th grader scores 14 points under the grade 4 bar. 2459 vs. 2473.
5th The average 5th grader scores 24 points under the grade 5 bar. 2478 vs. 2502.
6th The average 6th grader scores 27 points under the grade 6 bar. 2504 vs. 2531.

2022 results. The English test covers reading, writing, listening and research together. "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
3	36,685	2412.6	− 2432	−19.4	× 54 / 205	−5.1
4	36,688	2469.0	− 2473	−4	× 30 / 205	−0.6
5	36,689	2496.6	− 2502	−5.4	× 64 / 205	−1.7
6	36,692	2533.6	− 2531	2.6	× 57 / 205	0.7
Sum, rounded to a whole point						−7

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,170	2392.0	− 2432	−40	× 50 / 208	−9.6
4	34,172	2453.6	− 2473	−19.4	× 53 / 208	−4.9
5	34,174	2494.1	− 2502	−7.9	× 42 / 208	−1.6
6	34,176	2544.3	− 2531	13.3	× 63 / 208	4
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
3	34,782	2442.5	− 2432	10.5	× 52 / 194	2.8
4	34,785	2453.4	− 2473	−19.6	× 51 / 194	−5.2
5	34,786	2504.5	− 2502	2.5	× 51 / 194	0.7
6	34,789	2529.6	− 2531	−1.4	× 40 / 194	−0.3
Sum, rounded to a whole point						−2

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,793	2444.5	− 2432	12.5	× 44 / 195	2.8
4	34,795	2484.4	− 2473	11.4	× 47 / 195	2.7
5	34,797	2510.0	− 2502	8	× 49 / 195	2
6	34,799	2541.5	− 2531	10.5	× 55 / 195	3
Sum, rounded to a whole point						11

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,963	2419.9	− 2432	−12.1	× 45 / 191	−2.9
4	34,964	2470.2	− 2473	−2.8	× 45 / 191	−0.7
5	34,965	2495.9	− 2502	−6.1	× 46 / 191	−1.5
6	34,966	2534.0	− 2531	3	× 55 / 191	0.9
Sum, rounded to a whole point						−4

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,860	2421.8	− 2432	−10.2	× 34 / 118	−2.9
4	34,861	2459.2	− 2473	−13.8	× 25 / 118	−2.9
5	34,862	2478.2	− 2502	−23.8	× 22 / 118	−4.4
6	34,863	2503.9	− 2531	−27.1	× 37 / 118	−8.5
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. −7, −12, −2, 11, −4, −19 → −5.5
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 5 · 2016→2017: 10 · 2017→2018: 13 · 2018→2019: 15 · 2019→2022: 15 → average 11.6
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 11.6 × 2.66 = 30.9. Upper limit 25.4, lower limit −36.4.

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.