Willow Grove Elementary (Data source)
Source data for Willow Grove Elementary
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 |
||
| 3 | 2203858 | 2491 | - | 2436 | = | 55 | * | (133 | / | 392) | = | 18.66071427 | ||
| 4 | 2203861 | 2539 | - | 2485 | = | 54 | * | (140 | / | 392) | = | 19.28571428 | ||
| 5 | 2203862 | 2604 | - | 2528 | = | 76 | * | (119 | / | 392) | = | 23.07142853 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Willow Grove Elementary | 61 | ||||||||||||
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 |
||
| 3 | 67678 | 2495 | - | 2436 | = | 59 | * | (121 | / | 391) | = | 18.25831199 | ||
| 4 | 67679 | 2551 | - | 2485 | = | 66 | * | (129 | / | 391) | = | 21.77493602 | ||
| 5 | 67681 | 2590 | - | 2528 | = | 62 | * | (141 | / | 391) | = | 22.35805622 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Willow Grove Elementary | 62 | ||||||||||||
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 |
||
| 3 | 69461 | 2490 | - | 2436 | = | 54 | * | (116 | / | 367) | = | 17.06811988 | ||
| 4 | 69462 | 2546 | - | 2485 | = | 61 | * | (126 | / | 367) | = | 20.94277925 | ||
| 5 | 69464 | 2606 | - | 2528 | = | 78 | * | (125 | / | 367) | = | 26.56675749 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Willow Grove Elementary | 65 | ||||||||||||
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 |
||
| 3 | 69623 | 2495 | - | 2436 | = | 59 | * | (128 | / | 382) | = | 19.76963351 | ||
| 4 | 69626 | 2536 | - | 2485 | = | 51 | * | (127 | / | 382) | = | 16.95549733 | ||
| 5 | 69627 | 2610 | - | 2528 | = | 82 | * | (127 | / | 382) | = | 27.26178002 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Willow Grove Elementary | 64 | ||||||||||||
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 |
||
| 3 | 70145 | 2491 | - | 2436 | = | 55 | * | (128 | / | 385) | = | 18.28571426 | ||
| 4 | 70146 | 2526 | - | 2485 | = | 41 | * | (129 | / | 385) | = | 13.73766234 | ||
| 5 | 70147 | 2612 | - | 2528 | = | 84 | * | (128 | / | 385) | = | 27.92727269 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Willow Grove Elementary | 60 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 61 | 62 | 65 | 64 | 60 | 312.0 | 62.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 68.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 56.4
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 | 11% | 11% | 10% | 11% | 11% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Poway 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.
Willow Grove Elementary math proficiency
Zero+ meets standard.
9% less $meal
8% less $meal
7% less $meal
9% less $meal
10% 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.