Wangenheim Middle (Data source)
Source data for Wangenheim 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 | 2273537 | 2521 | - | 2552 | = | -31 | * | (264 | / | 884) | = | -9.25791852 | ||
| 7 | 2273538 | 2546 | - | 2567 | = | -21 | * | (299 | / | 884) | = | -7.10294117 | ||
| 8 | 2273540 | 2574 | - | 2586 | = | -12 | * | (321 | / | 884) | = | -4.35746605 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Wangenheim Middle | -21 | ||||||||||||
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 | 69715 | 2521 | - | 2552 | = | -31 | * | (303 | / | 892) | = | -10.53026904 | ||
| 7 | 69717 | 2544 | - | 2567 | = | -23 | * | (280 | / | 892) | = | -7.21973094 | ||
| 8 | 69720 | 2579 | - | 2586 | = | -7 | * | (309 | / | 892) | = | -2.42488789 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Wangenheim Middle | -20 | ||||||||||||
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 | 71548 | 2536 | - | 2552 | = | -16 | * | (298 | / | 873) | = | -5.46162656 | ||
| 7 | 71551 | 2556 | - | 2567 | = | -11 | * | (305 | / | 873) | = | -3.84306987 | ||
| 8 | 71553 | 2569 | - | 2586 | = | -17 | * | (270 | / | 873) | = | -5.25773195 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Wangenheim Middle | -15 | ||||||||||||
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 | 71694 | 2536 | - | 2552 | = | -16 | * | (309 | / | 936) | = | -5.28205128 | ||
| 7 | 71696 | 2547 | - | 2567 | = | -20 | * | (311 | / | 936) | = | -6.64529914 | ||
| 8 | 71698 | 2570 | - | 2586 | = | -16 | * | (316 | / | 936) | = | -5.40170939 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Wangenheim Middle | -17 | ||||||||||||
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 | 72179 | 2518 | - | 2552 | = | -34 | * | (280 | / | 896) | = | -10.625 | ||
| 7 | 72180 | 2565 | - | 2567 | = | -2 | * | (305 | / | 896) | = | -0.68080357 | ||
| 8 | 72181 | 2583 | - | 2586 | = | -3 | * | (311 | / | 896) | = | -1.04129464 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Wangenheim Middle | -12 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -21 | -20 | -15 | -17 | -12 | -85.0 | -17.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -8.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -26.0
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 | 54% | 54% | 55% | 54% | 53% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
San Diego Unified school district | County of San Diego
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.
Wangenheim Middle math proficiency
Zero+ meets standard.
38% less $meal
40% less $meal
41% less $meal
42% less $meal
41% 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.