L. P. Collins Elementary (Data source)
Source data for L. P. Collins 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 | 2636228 | 2526 | - | 2436 | = | 90 | * | (121 | / | 384) | = | 28.35937494 | ||
| 4 | 2636231 | 2563 | - | 2485 | = | 78 | * | (127 | / | 384) | = | 25.79687495 | ||
| 5 | 2636232 | 2611 | - | 2528 | = | 83 | * | (136 | / | 384) | = | 29.39583328 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for L. P. Collins Elementary | 84 | ||||||||||||
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 | 80377 | 2522 | - | 2436 | = | 86 | * | (116 | / | 358) | = | 27.86592176 | ||
| 4 | 80380 | 2588 | - | 2485 | = | 103 | * | (118 | / | 358) | = | 33.94972061 | ||
| 5 | 80381 | 2604 | - | 2528 | = | 76 | * | (124 | / | 358) | = | 26.32402234 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for L. P. Collins Elementary | 88 | ||||||||||||
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 | 82599 | 2526 | - | 2436 | = | 90 | * | (129 | / | 349) | = | 33.26647563 | ||
| 4 | 82601 | 2580 | - | 2485 | = | 95 | * | (108 | / | 349) | = | 29.39828077 | ||
| 5 | 82603 | 2618 | - | 2528 | = | 90 | * | (112 | / | 349) | = | 28.88252145 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for L. P. Collins Elementary | 92 | ||||||||||||
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 | 82808 | 2532 | - | 2436 | = | 96 | * | (121 | / | 374) | = | 31.05882346 | ||
| 4 | 82809 | 2580 | - | 2485 | = | 95 | * | (140 | / | 374) | = | 35.56149725 | ||
| 5 | 82812 | 2598 | - | 2528 | = | 70 | * | (113 | / | 374) | = | 21.14973259 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for L. P. Collins Elementary | 88 | ||||||||||||
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 | 83420 | 2523 | - | 2436 | = | 87 | * | (119 | / | 365) | = | 28.36438354 | ||
| 4 | 83421 | 2583 | - | 2485 | = | 98 | * | (111 | / | 365) | = | 29.80273972 | ||
| 5 | 83422 | 2603 | - | 2528 | = | 75 | * | (135 | / | 365) | = | 27.73972598 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for L. P. Collins Elementary | 86 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 84 | 88 | 92 | 88 | 86 | 438.0 | 87.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 93.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 81.6
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 | 2% | 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.
L. P. Collins Elementary math proficiency
Zero+ meets standard.
2% less $meal
1% less $meal
2% less $meal
3% less $meal
2% 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.