Poinsettia Elementary (Data source)
Source data for Poinsettia 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 | 3148658 | 2454 | - | 2436 | = | 18 | * | (68 | / | 231) | = | 5.29870129 | ||
| 4 | 3148659 | 2503 | - | 2485 | = | 18 | * | (80 | / | 231) | = | 6.23376623 | ||
| 5 | 3148662 | 2506 | - | 2528 | = | -22 | * | (83 | / | 231) | = | -7.9047619 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Poinsettia Elementary | 4 | ||||||||||||
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 | 97052 | 2441 | - | 2436 | = | 5 | * | (82 | / | 237) | = | 1.72995781 | ||
| 4 | 97055 | 2480 | - | 2485 | = | -5 | * | (74 | / | 237) | = | -1.56118143 | ||
| 5 | 97057 | 2505 | - | 2528 | = | -23 | * | (81 | / | 237) | = | -7.86075947 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Poinsettia Elementary | -8 | ||||||||||||
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 | 99864 | 2461 | - | 2436 | = | 25 | * | (88 | / | 244) | = | 9.01639343 | ||
| 4 | 99866 | 2483 | - | 2485 | = | -2 | * | (79 | / | 244) | = | -0.64754098 | ||
| 5 | 99867 | 2500 | - | 2528 | = | -28 | * | (77 | / | 244) | = | -8.83606556 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Poinsettia Elementary | 0 | ||||||||||||
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 | 100015 | 2450 | - | 2436 | = | 14 | * | (77 | / | 249) | = | 4.32931726 | ||
| 4 | 100016 | 2478 | - | 2485 | = | -7 | * | (94 | / | 249) | = | -2.64257028 | ||
| 5 | 100019 | 2500 | - | 2528 | = | -28 | * | (78 | / | 249) | = | -8.77108434 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Poinsettia Elementary | -7 | ||||||||||||
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 | 100679 | 2443 | - | 2436 | = | 7 | * | (80 | / | 242) | = | 2.31404958 | ||
| 4 | 100680 | 2497 | - | 2485 | = | 12 | * | (70 | / | 242) | = | 3.47107438 | ||
| 5 | 100681 | 2505 | - | 2528 | = | -23 | * | (92 | / | 242) | = | -8.74380165 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Poinsettia Elementary | -3 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 4 | -8 | 0 | -7 | -3 | -14.0 | -2.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 11.5
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -18.5
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 | 31% | 27% | 32% | 30% | 39% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Ventura Unified school district | County of Ventura
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.
Poinsettia Elementary math proficiency
Zero+ meets standard.
22% less $meal
18% less $meal
19% less $meal
19% 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.