Westlake Elementary (Data source)
Source data for Westlake 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 | 3157238 | 2461 | - | 2436 | = | 25 | * | (82 | / | 263) | = | 7.7946768 | ||
| 4 | 3157240 | 2506 | - | 2485 | = | 21 | * | (90 | / | 263) | = | 7.18631178 | ||
| 5 | 3157242 | 2550 | - | 2528 | = | 22 | * | (91 | / | 263) | = | 7.61216729 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Westlake 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 | 97299 | 2452 | - | 2436 | = | 16 | * | (90 | / | 266) | = | 5.41353382 | ||
| 4 | 97300 | 2529 | - | 2485 | = | 44 | * | (85 | / | 266) | = | 14.06015037 | ||
| 5 | 97303 | 2556 | - | 2528 | = | 28 | * | (91 | / | 266) | = | 9.57894736 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Westlake Elementary | 29 | ||||||||||||
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 | 100124 | 2476 | - | 2436 | = | 40 | * | (77 | / | 257) | = | 11.98443576 | ||
| 4 | 100125 | 2506 | - | 2485 | = | 21 | * | (95 | / | 257) | = | 7.76264591 | ||
| 5 | 100128 | 2570 | - | 2528 | = | 42 | * | (85 | / | 257) | = | 13.89105056 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Westlake Elementary | 34 | ||||||||||||
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 | 100278 | 2486 | - | 2436 | = | 50 | * | (91 | / | 268) | = | 16.9776119 | ||
| 4 | 100281 | 2525 | - | 2485 | = | 40 | * | (82 | / | 268) | = | 12.23880596 | ||
| 5 | 100282 | 2541 | - | 2528 | = | 13 | * | (95 | / | 268) | = | 4.60820894 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Westlake Elementary | 34 | ||||||||||||
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 | 100943 | 2497 | - | 2436 | = | 61 | * | (95 | / | 272) | = | 21.30514701 | ||
| 4 | 100944 | 2523 | - | 2485 | = | 38 | * | (100 | / | 272) | = | 13.9705882 | ||
| 5 | 100945 | 2566 | - | 2528 | = | 38 | * | (77 | / | 272) | = | 10.75735293 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Westlake Elementary | 46 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 23 | 29 | 34 | 34 | 46 | 166.0 | 33.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 57.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 9.2
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 | 12% | 11% | 12% | 15% | 12% |
| 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.
Westlake Elementary math proficiency
Zero+ meets standard.
9% less $meal
10% less $meal
11% less $meal
13% less $meal
10% 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.