King Jr. (Martin Luther) Academic Middle (Data source)
Source data for King Jr. (Martin Luther) Academic Middle
2015
| Step 1 | Step 2 | Step 3 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Get Mean Scale Score from line numbers in this data file. | Subtract 'met min' Scale Score. from Mean Scale Score to get Distance From Standard | Multiply Distance From Standard by proportion of students in grade. | ||||||||||||
| Grade | Line number |
Mean Scale Score |
- | Scale Score: met min |
= | Distance from standard |
* | (Students tested in grade |
/ | Students) tested in school |
= | Weighted Distance From Standard |
||
| 6 | 2376155 | 2475 | - | 2552 | = | -77 | * | (168 | / | 497) | = | -26.02816901 | ||
| 7 | 2376156 | 2489 | - | 2567 | = | -78 | * | (161 | / | 497) | = | -25.26760556 | ||
| 8 | 2376159 | 2470 | - | 2586 | = | -116 | * | (168 | / | 497) | = | -39.2112676 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for King Jr. (Martin Luther) Academic Middle | -91 | ||||||||||||
2016
| Step 1 | Step 2 | Step 3 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Get Mean Scale Score from line numbers in this data file. | Subtract 'met min' Scale Score. from Mean Scale Score to get Distance From Standard | Multiply Distance From Standard by proportion of students in grade. | ||||||||||||
| Grade | Line number |
Mean Scale Score |
- | Scale Score: met min |
= | Distance from standard |
* | (Students tested in grade |
/ | Students) tested in school |
= | Weighted Distance From Standard |
||
| 6 | 72571 | 2483 | - | 2552 | = | -69 | * | (173 | / | 489) | = | -24.41104294 | ||
| 7 | 72573 | 2499 | - | 2567 | = | -68 | * | (159 | / | 489) | = | -22.11042943 | ||
| 8 | 72575 | 2515 | - | 2586 | = | -71 | * | (157 | / | 489) | = | -22.79550097 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for King Jr. (Martin Luther) Academic Middle | -69 | ||||||||||||
2017
| Step 1 | Step 2 | Step 3 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Get Mean Scale Score from line numbers in this data file. | Subtract 'met min' Scale Score. from Mean Scale Score to get Distance From Standard | Multiply Distance From Standard by proportion of students in grade. | ||||||||||||
| Grade | Line number |
Mean Scale Score |
- | Scale Score: met min |
= | Distance from standard |
* | (Students tested in grade |
/ | Students) tested in school |
= | Weighted Distance From Standard |
||
| 6 | 74545 | 2479 | - | 2552 | = | -73 | * | (154 | / | 466) | = | -24.12446352 | ||
| 7 | 74547 | 2516 | - | 2567 | = | -51 | * | (162 | / | 466) | = | -17.72961368 | ||
| 8 | 74549 | 2541 | - | 2586 | = | -45 | * | (150 | / | 466) | = | -14.48497854 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for King Jr. (Martin Luther) Academic Middle | -56 | ||||||||||||
2018
| Step 1 | Step 2 | Step 3 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Get Mean Scale Score from line numbers in this data file. | Subtract 'met min' Scale Score. from Mean Scale Score to get Distance From Standard | Multiply Distance From Standard by proportion of students in grade. | ||||||||||||
| Grade | Line number |
Mean Scale Score |
- | Scale Score: met min |
= | Distance from standard |
* | (Students tested in grade |
/ | Students) tested in school |
= | Weighted Distance From Standard |
||
| 6 | 74719 | 2468 | - | 2552 | = | -84 | * | (170 | / | 489) | = | -29.20245392 | ||
| 7 | 74722 | 2509 | - | 2567 | = | -58 | * | (154 | / | 489) | = | -18.26584865 | ||
| 8 | 74723 | 2525 | - | 2586 | = | -61 | * | (165 | / | 489) | = | -20.58282203 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for King Jr. (Martin Luther) Academic Middle | -68 | ||||||||||||
2019
| Step 1 | Step 2 | Step 3 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Get Mean Scale Score from line numbers in this data file. | Subtract 'met min' Scale Score. from Mean Scale Score to get Distance From Standard | Multiply Distance From Standard by proportion of students in grade. | ||||||||||||
| Grade | Line number |
Mean Scale Score |
- | Scale Score: met min |
= | Distance from standard |
* | (Students tested in grade |
/ | Students) tested in school |
= | Weighted Distance From Standard |
||
| 6 | 75245 | 2458 | - | 2552 | = | -94 | * | (140 | / | 467) | = | -28.1798715 | ||
| 7 | 75246 | 2491 | - | 2567 | = | -76 | * | (170 | / | 467) | = | -27.66595282 | ||
| 8 | 75247 | 2503 | - | 2586 | = | -83 | * | (157 | / | 467) | = | -27.90364019 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for King Jr. (Martin Luther) Academic Middle | -84 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -91 | -69 | -56 | -68 | -84 | -368.0 | -73.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -34.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -112.6
For the lines, you have the data necessary to plot the chart.
Very last step
The percent of students getting a Free or Reduced Price Meal comes from the following sources:
| 2015 | 2016 | 2017 | 2018 | 2019 | |
|---|---|---|---|---|---|
| Percent | 84% | 71% | 64% | 73% | 77% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
San Francisco Unified school district | County of San Francisco
THIS chart shows what the school system "wants"
PLUS a "special" or "outside" cause of variation: wealth/poverty.
NOT what teachers want.
NOT what principals want.
NOT what parents want.
King Jr. (Martin Luther) Academic Middle math proficiency
Zero+ meets standard.
67% less $meal
62% less $meal
54% less $meal
58% less $meal
64% less $meal
• Any result above zero is proficient; below is not proficient. • There is a 99% chance that results will remain the same in coming years, which is to say, between the Upper and Lower Control Limits (the gray lines). • The houses with the % of students receiving a Free or Reduced Price Meal is a measure of wealth/poverty.