McPherson Elementary (Data source)
Source data for McPherson 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 | 1385459 | 2375 | - | 2436 | = | -61 | * | (96 | / | 284) | = | -20.61971831 | ||
| 4 | 1385460 | 2409 | - | 2485 | = | -76 | * | (101 | / | 284) | = | -27.02816895 | ||
| 5 | 1385463 | 2420 | - | 2528 | = | -108 | * | (87 | / | 284) | = | -33.08450702 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for McPherson Elementary | -81 | ||||||||||||
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 | 43642 | 2384 | - | 2436 | = | -52 | * | (89 | / | 287) | = | -16.12543551 | ||
| 4 | 43645 | 2404 | - | 2485 | = | -81 | * | (96 | / | 287) | = | -27.09407661 | ||
| 5 | 43647 | 2429 | - | 2528 | = | -99 | * | (102 | / | 287) | = | -35.1846689 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for McPherson Elementary | -78 | ||||||||||||
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 | 44718 | 2374 | - | 2436 | = | -62 | * | (84 | / | 271) | = | -19.21771214 | ||
| 4 | 44720 | 2424 | - | 2485 | = | -61 | * | (92 | / | 271) | = | -20.70848703 | ||
| 5 | 44721 | 2461 | - | 2528 | = | -67 | * | (95 | / | 271) | = | -23.48708484 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for McPherson Elementary | -63 | ||||||||||||
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 | 44730 | 2371 | - | 2436 | = | -65 | * | (77 | / | 260) | = | -19.24999999 | ||
| 4 | 44733 | 2416 | - | 2485 | = | -69 | * | (85 | / | 260) | = | -22.55769224 | ||
| 5 | 44734 | 2466 | - | 2528 | = | -62 | * | (98 | / | 260) | = | -23.36923071 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for McPherson Elementary | -65 | ||||||||||||
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 | 44865 | 2371 | - | 2436 | = | -65 | * | (71 | / | 227) | = | -20.33039645 | ||
| 4 | 44866 | 2409 | - | 2485 | = | -76 | * | (71 | / | 227) | = | -23.77092508 | ||
| 5 | 44867 | 2460 | - | 2528 | = | -68 | * | (85 | / | 227) | = | -25.46255505 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for McPherson Elementary | -70 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -81 | -78 | -63 | -65 | -70 | -357.0 | -71.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -50.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -92.4
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 | 85% | 85% | 86% | 86% | 87% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Napa Valley Unified school district | County of Napa
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.
McPherson Elementary math proficiency
Zero+ meets standard.
67% less $meal
70% less $meal
67% less $meal
76% less $meal
76% 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.