Anahuacalmecac International University Preparator: 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 11.

3rd The average 3rd grader scores 51 points under the grade 3 bar. 2381 vs. 2432.
4th The average 4th grader scores just under the grade 3 bar. 2427 vs. 2432. The 4th-grade bar is 2473.
5th The average 5th grader scores 20 points under the grade 5 bar. 2483 vs. 2502.
6th The average 6th grader scores 28 points under the grade 6 bar. 2503 vs. 2531.
7th The average 7th grader meets the grade 7 bar. 2599 vs. 2552.
8th The average 8th grader scores just under the grade 6 bar. 2525 vs. 2531. The 8th-grade bar is 2567.
11th The average 11th grader meets the grade 11 bar. 2635 vs. 2583.

2019 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.

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	37,875	2368.9	− 2432	−63.1	× 33 / 207	−10.1
4	37,877	2395.9	− 2473	−77.1	× 26 / 207	−9.7
5	37,878	2417.5	− 2502	−84.5	× 25 / 207	−10.2
6	37,880	2460.8	− 2531	−70.2	× 31 / 207	−10.5
7	37,883	2457.2	− 2552	−94.8	× 35 / 207	−16
8	37,885	2537.6	− 2567	−29.4	× 30 / 207	−4.3
11	37,887	2560.6	− 2583	−22.4	× 27 / 207	−2.9
Sum, rounded to a whole point						−64

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	38,769	2362.7	− 2432	−69.3	× 27 / 208	−9
4	38,770	2388.3	− 2473	−84.7	× 32 / 208	−13
5	38,773	2446.8	− 2502	−55.2	× 26 / 208	−6.9
6	38,774	2431.1	− 2531	−99.9	× 25 / 208	−12
7	38,776	2496.5	− 2552	−55.5	× 33 / 208	−8.8
8	38,779	2460.7	− 2567	−106.3	× 35 / 208	−17.9
11	38,780	2553.7	− 2583	−29.3	× 30 / 208	−4.2
Sum, rounded to a whole point						−72

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	38,743	2372.2	− 2432	−59.8	× 26 / 162	−9.6
4	38,745	2419.5	− 2473	−53.5	× 28 / 162	−9.2
5	38,747	2478.5	− 2502	−23.5	× 23 / 162	−3.3
6	38,749	2527.2	− 2531	−3.8	× 20 / 162	−0.5
7	38,751	2481.2	− 2552	−70.8	× 21 / 162	−9.2
8	38,753	2520.9	− 2567	−46.1	× 28 / 162	−8
11	38,755	2554.4	− 2583	−28.6	× 16 / 162	−2.8
Sum, rounded to a whole point						−43

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	38,911	2381.1	− 2432	−50.9	× 28 / 167	−8.5
4	38,912	2426.7	− 2473	−46.3	× 23 / 167	−6.4
5	38,913	2482.5	− 2502	−19.5	× 28 / 167	−3.3
6	38,914	2502.7	− 2531	−28.3	× 23 / 167	−3.9
7	38,915	2599.1	− 2552	47.1	× 25 / 167	7.1
8	38,916	2524.6	− 2567	−42.4	× 21 / 167	−5.3
11	38,917	2635.3	− 2583	52.3	× 19 / 167	6
Sum, rounded to a whole point						−14

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −64, −72, −43, −14 → −48.3
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2016→2017: 8 · 2017→2018: 29 · 2018→2019: 29 → average 22
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 22 × 2.66 = 58.5. Upper limit 10.2, lower limit −106.8.

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".

Step 3 · Free or reduced-price meals

The share of enrolled students eligible for free or reduced-price meals. From 2015–16, 2016–17, 2017–18, 2018–19.