Walnut Elementary (Data source)
Source data for Walnut 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 | 3155320 | 2418 | - | 2436 | = | -18 | * | (52 | / | 169) | = | -5.53846153 | ||
| 4 | 3155321 | 2477 | - | 2485 | = | -8 | * | (42 | / | 169) | = | -1.98816568 | ||
| 5 | 3155324 | 2494 | - | 2528 | = | -34 | * | (75 | / | 169) | = | -15.08875739 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Walnut Elementary | -23 | ||||||||||||
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 | 97242 | 2428 | - | 2436 | = | -8 | * | (61 | / | 158) | = | -3.08860759 | ||
| 4 | 97244 | 2462 | - | 2485 | = | -23 | * | (52 | / | 158) | = | -7.56962025 | ||
| 5 | 97247 | 2511 | - | 2528 | = | -17 | * | (45 | / | 158) | = | -4.84177214 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Walnut Elementary | -15 | ||||||||||||
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 | 100067 | 2427 | - | 2436 | = | -9 | * | (39 | / | 156) | = | -2.25 | ||
| 4 | 100069 | 2469 | - | 2485 | = | -16 | * | (57 | / | 156) | = | -5.84615384 | ||
| 5 | 100071 | 2495 | - | 2528 | = | -33 | * | (60 | / | 156) | = | -12.69230767 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Walnut Elementary | -21 | ||||||||||||
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 | 100223 | 2440 | - | 2436 | = | 4 | * | (41 | / | 135) | = | 1.21481481 | ||
| 4 | 100224 | 2464 | - | 2485 | = | -21 | * | (39 | / | 135) | = | -6.06666665 | ||
| 5 | 100227 | 2491 | - | 2528 | = | -37 | * | (55 | / | 135) | = | -15.07407406 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Walnut Elementary | -20 | ||||||||||||
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 | 100887 | 2444 | - | 2436 | = | 8 | * | (47 | / | 126) | = | 2.98412698 | ||
| 4 | 100888 | 2449 | - | 2485 | = | -36 | * | (42 | / | 126) | = | -11.99999999 | ||
| 5 | 100889 | 2493 | - | 2528 | = | -35 | * | (37 | / | 126) | = | -10.27777776 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Walnut Elementary | -19 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -23 | -15 | -21 | -20 | -19 | -98.0 | -19.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -13.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -25.6
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 | 41% | 46% | 45% | 47% | 51% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Conejo Valley 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.
Walnut Elementary math proficiency
Zero+ meets standard.
33% less $meal
37% less $meal
36% less $meal
39% less $meal
46% 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.