Torrance Elementary (Data source)
Source data for Torrance 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 | 1133510 | 2427 | - | 2436 | = | -9 | * | (78 | / | 259) | = | -2.71042471 | ||
| 4 | 1133511 | 2447 | - | 2485 | = | -38 | * | (91 | / | 259) | = | -13.35135134 | ||
| 5 | 1133514 | 2451 | - | 2528 | = | -77 | * | (90 | / | 259) | = | -26.75675672 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Torrance Elementary | -43 | ||||||||||||
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 | 35331 | 2423 | - | 2436 | = | -13 | * | (90 | / | 261) | = | -4.48275862 | ||
| 4 | 35333 | 2451 | - | 2485 | = | -34 | * | (80 | / | 261) | = | -10.42145591 | ||
| 5 | 35336 | 2458 | - | 2528 | = | -70 | * | (91 | / | 261) | = | -24.40613021 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Torrance Elementary | -39 | ||||||||||||
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 | 36030 | 2422 | - | 2436 | = | -14 | * | (87 | / | 275) | = | -4.4290909 | ||
| 4 | 36032 | 2482 | - | 2485 | = | -3 | * | (99 | / | 275) | = | -1.08 | ||
| 5 | 36034 | 2468 | - | 2528 | = | -60 | * | (89 | / | 275) | = | -19.41818178 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Torrance Elementary | -25 | ||||||||||||
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 | 36029 | 2430 | - | 2436 | = | -6 | * | (79 | / | 266) | = | -1.78195489 | ||
| 4 | 36031 | 2477 | - | 2485 | = | -8 | * | (91 | / | 266) | = | -2.7368421 | ||
| 5 | 36033 | 2497 | - | 2528 | = | -31 | * | (96 | / | 266) | = | -11.18796991 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Torrance Elementary | -16 | ||||||||||||
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 | 36198 | 2443 | - | 2436 | = | 7 | * | (72 | / | 240) | = | 2.1 | ||
| 4 | 36199 | 2480 | - | 2485 | = | -5 | * | (78 | / | 240) | = | -1.625 | ||
| 5 | 36200 | 2500 | - | 2528 | = | -28 | * | (90 | / | 240) | = | -10.5 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Torrance Elementary | -10 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -43 | -39 | -25 | -16 | -10 | -133.0 | -26.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 15.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -68.6
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 | 64% | 66% | 63% | 64% | 68% |
| 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.
Torrance Elementary math proficiency
Zero+ meets standard.
50% less $meal
50% less $meal
50% less $meal
56% less $meal
59% 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.