Towers Elementary (Data source)
Source data for Towers 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 | 1133809 | 2458 | - | 2436 | = | 22 | * | (100 | / | 321) | = | 6.85358254 | ||
| 4 | 1133812 | 2522 | - | 2485 | = | 37 | * | (107 | / | 321) | = | 12.33333332 | ||
| 5 | 1133813 | 2549 | - | 2528 | = | 21 | * | (114 | / | 321) | = | 7.45794391 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Towers Elementary | 27 | ||||||||||||
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 | 35340 | 2487 | - | 2436 | = | 51 | * | (90 | / | 304) | = | 15.09868418 | ||
| 4 | 35341 | 2520 | - | 2485 | = | 35 | * | (106 | / | 304) | = | 12.20394735 | ||
| 5 | 35343 | 2541 | - | 2528 | = | 13 | * | (108 | / | 304) | = | 4.61842104 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Towers Elementary | 32 | ||||||||||||
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 | 36038 | 2482 | - | 2436 | = | 46 | * | (101 | / | 303) | = | 15.33333332 | ||
| 4 | 36040 | 2546 | - | 2485 | = | 61 | * | (95 | / | 303) | = | 19.12541253 | ||
| 5 | 36041 | 2563 | - | 2528 | = | 35 | * | (107 | / | 303) | = | 12.35973596 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Towers Elementary | 47 | ||||||||||||
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 | 36038 | 2492 | - | 2436 | = | 56 | * | (95 | / | 292) | = | 18.21917804 | ||
| 4 | 36040 | 2539 | - | 2485 | = | 54 | * | (106 | / | 292) | = | 19.60273969 | ||
| 5 | 36042 | 2572 | - | 2528 | = | 44 | * | (91 | / | 292) | = | 13.71232874 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Towers Elementary | 52 | ||||||||||||
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 | 36206 | 2495 | - | 2436 | = | 59 | * | (90 | / | 298) | = | 17.8187919 | ||
| 4 | 36207 | 2548 | - | 2485 | = | 63 | * | (98 | / | 298) | = | 20.71812078 | ||
| 5 | 36208 | 2576 | - | 2528 | = | 48 | * | (110 | / | 298) | = | 17.71812077 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Towers Elementary | 56 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 27 | 32 | 47 | 52 | 56 | 214.0 | 42.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 78.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 6.8
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% | 12% | 11% | 14% | 13% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Torrance Unified school district | County of Los Angeles
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.
Towers Elementary math proficiency
Zero+ meets standard.
7% less $meal
9% less $meal
9% less $meal
12% 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.