West Valley Elementary (Data source)
Source data for West Valley 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 | 2641344 | 2494 | - | 2436 | = | 58 | * | (99 | / | 326) | = | 17.6134969 | ||
| 4 | 2641347 | 2559 | - | 2485 | = | 74 | * | (113 | / | 326) | = | 25.65030668 | ||
| 5 | 2641348 | 2576 | - | 2528 | = | 48 | * | (114 | / | 326) | = | 16.78527605 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for West Valley Elementary | 60 | ||||||||||||
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 | 80538 | 2484 | - | 2436 | = | 48 | * | (83 | / | 308) | = | 12.93506491 | ||
| 4 | 80540 | 2534 | - | 2485 | = | 49 | * | (105 | / | 308) | = | 16.70454541 | ||
| 5 | 80542 | 2605 | - | 2528 | = | 77 | * | (120 | / | 308) | = | 29.99999995 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for West Valley Elementary | 60 | ||||||||||||
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 | 82757 | 2500 | - | 2436 | = | 64 | * | (125 | / | 305) | = | 26.22950816 | ||
| 4 | 82758 | 2548 | - | 2485 | = | 63 | * | (75 | / | 305) | = | 15.49180326 | ||
| 5 | 82761 | 2601 | - | 2528 | = | 73 | * | (105 | / | 305) | = | 25.13114754 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for West Valley Elementary | 67 | ||||||||||||
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 | 82966 | 2490 | - | 2436 | = | 54 | * | (90 | / | 292) | = | 16.64383561 | ||
| 4 | 82967 | 2574 | - | 2485 | = | 89 | * | (122 | / | 292) | = | 37.18493149 | ||
| 5 | 82970 | 2592 | - | 2528 | = | 64 | * | (80 | / | 292) | = | 17.53424653 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for West Valley Elementary | 71 | ||||||||||||
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 | 83578 | 2508 | - | 2436 | = | 72 | * | (97 | / | 314) | = | 22.24203818 | ||
| 4 | 83579 | 2543 | - | 2485 | = | 58 | * | (95 | / | 314) | = | 17.54777066 | ||
| 5 | 83580 | 2614 | - | 2528 | = | 86 | * | (122 | / | 314) | = | 33.41401267 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for West Valley Elementary | 73 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 60 | 60 | 67 | 71 | 73 | 331.0 | 66.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 84.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 48.2
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 | 2% | 2% | 2% | 4% | 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.
West Valley Elementary math proficiency
Zero+ meets standard.
2% less $meal
2% less $meal
2% less $meal
4% 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.