Chester W. Nimitz Elementary (Data source)
Source data for Chester W. Nimitz 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 | 2635925 | 2451 | - | 2436 | = | 15 | * | (129 | / | 347) | = | 5.57636888 | ||
| 4 | 2635926 | 2471 | - | 2485 | = | -14 | * | (106 | / | 347) | = | -4.27665706 | ||
| 5 | 2635929 | 2515 | - | 2528 | = | -13 | * | (112 | / | 347) | = | -4.19596541 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Chester W. Nimitz Elementary | -3 | ||||||||||||
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 | 80370 | 2474 | - | 2436 | = | 38 | * | (112 | / | 329) | = | 12.93617018 | ||
| 4 | 80371 | 2515 | - | 2485 | = | 30 | * | (119 | / | 329) | = | 10.85106381 | ||
| 5 | 80374 | 2504 | - | 2528 | = | -24 | * | (98 | / | 329) | = | -7.14893616 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Chester W. Nimitz Elementary | 17 | ||||||||||||
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 | 82590 | 2459 | - | 2436 | = | 23 | * | (83 | / | 302) | = | 6.32119205 | ||
| 4 | 82593 | 2519 | - | 2485 | = | 34 | * | (107 | / | 302) | = | 12.04635759 | ||
| 5 | 82595 | 2525 | - | 2528 | = | -3 | * | (112 | / | 302) | = | -1.11258278 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Chester W. Nimitz Elementary | 17 | ||||||||||||
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 | 82799 | 2478 | - | 2436 | = | 42 | * | (77 | / | 270) | = | 11.97777777 | ||
| 4 | 82801 | 2498 | - | 2485 | = | 13 | * | (85 | / | 270) | = | 4.09259258 | ||
| 5 | 82803 | 2531 | - | 2528 | = | 3 | * | (108 | / | 270) | = | 1.2 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Chester W. Nimitz Elementary | 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 |
||
| 3 | 83412 | 2483 | - | 2436 | = | 47 | * | (102 | / | 257) | = | 18.65369647 | ||
| 4 | 83413 | 2509 | - | 2485 | = | 24 | * | (73 | / | 257) | = | 6.81712061 | ||
| 5 | 83414 | 2536 | - | 2528 | = | 8 | * | (82 | / | 257) | = | 2.55252918 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Chester W. Nimitz Elementary | 28 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -3 | 17 | 17 | 17 | 28 | 76.0 | 15.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 48.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -17.8
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 | 21% | 19% | 21% | 22% | 22% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Cupertino Union school district | County of Santa Clara
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.
Chester W. Nimitz Elementary math proficiency
Zero+ meets standard.
17% less $meal
17% less $meal
18% less $meal
19% less $meal
17% 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.