Nelson S. Dilworth Elementary (Data source)
Source data for Nelson S. Dilworth 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 | 2639870 | 2538 | - | 2436 | = | 102 | * | (70 | / | 267) | = | 26.74157297 | ||
| 4 | 2639873 | 2600 | - | 2485 | = | 115 | * | (98 | / | 267) | = | 42.20973777 | ||
| 5 | 2639874 | 2627 | - | 2528 | = | 99 | * | (99 | / | 267) | = | 36.70786508 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Nelson S. Dilworth Elementary | 106 | ||||||||||||
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 | 80490 | 2546 | - | 2436 | = | 110 | * | (74 | / | 254) | = | 32.04724402 | ||
| 4 | 80491 | 2591 | - | 2485 | = | 106 | * | (81 | / | 254) | = | 33.80314952 | ||
| 5 | 80494 | 2644 | - | 2528 | = | 116 | * | (99 | / | 254) | = | 45.21259836 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Nelson S. Dilworth Elementary | 111 | ||||||||||||
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 | 82708 | 2534 | - | 2436 | = | 98 | * | (94 | / | 258) | = | 35.70542633 | ||
| 4 | 82711 | 2585 | - | 2485 | = | 100 | * | (82 | / | 258) | = | 31.7829457 | ||
| 5 | 82713 | 2637 | - | 2528 | = | 109 | * | (82 | / | 258) | = | 34.64341081 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Nelson S. Dilworth Elementary | 102 | ||||||||||||
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 | 82917 | 2534 | - | 2436 | = | 98 | * | (76 | / | 240) | = | 31.03333327 | ||
| 4 | 82919 | 2587 | - | 2485 | = | 102 | * | (87 | / | 240) | = | 36.975 | ||
| 5 | 82921 | 2639 | - | 2528 | = | 111 | * | (77 | / | 240) | = | 35.61249996 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Nelson S. Dilworth Elementary | 104 | ||||||||||||
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 | 83530 | 2543 | - | 2436 | = | 107 | * | (71 | / | 235) | = | 32.32765951 | ||
| 4 | 83531 | 2587 | - | 2485 | = | 102 | * | (72 | / | 235) | = | 31.25106376 | ||
| 5 | 83532 | 2636 | - | 2528 | = | 108 | * | (92 | / | 235) | = | 42.28085099 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Nelson S. Dilworth Elementary | 106 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 106 | 111 | 102 | 104 | 106 | 529.0 | 105.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 114.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 96.8
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 | 1% | 2% | 2% | 3% | 3% |
| 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.
Nelson S. Dilworth Elementary math proficiency
Zero+ meets standard.
1% less $meal
2% less $meal
1% less $meal
3% less $meal
3% 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.