Twin Lakes Elementary (Data source)
Source data for Twin Lakes 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 | 1043136 | 2411 | - | 2436 | = | -25 | * | (59 | / | 239) | = | -6.1715481 | ||
| 4 | 1043139 | 2419 | - | 2485 | = | -66 | * | (51 | / | 239) | = | -14.08368199 | ||
| 5 | 1043140 | 2433 | - | 2528 | = | -95 | * | (58 | / | 239) | = | -23.05439328 | ||
| 6 | 1043143 | 2488 | - | 2552 | = | -64 | * | (71 | / | 239) | = | -19.01255226 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Twin Lakes Elementary | -62 | ||||||||||||
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 | 32770 | 2404 | - | 2436 | = | -32 | * | (77 | / | 241) | = | -10.22406637 | ||
| 4 | 32772 | 2424 | - | 2485 | = | -61 | * | (56 | / | 241) | = | -14.17427385 | ||
| 5 | 32774 | 2457 | - | 2528 | = | -71 | * | (53 | / | 241) | = | -15.61410785 | ||
| 6 | 32777 | 2488 | - | 2552 | = | -64 | * | (55 | / | 241) | = | -14.60580909 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Twin Lakes Elementary | -55 | ||||||||||||
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 | 33349 | 2430 | - | 2436 | = | -6 | * | (44 | / | 213) | = | -1.23943661 | ||
| 4 | 33351 | 2439 | - | 2485 | = | -46 | * | (68 | / | 213) | = | -14.685446 | ||
| 5 | 33352 | 2453 | - | 2528 | = | -75 | * | (50 | / | 213) | = | -17.6056338 | ||
| 6 | 33355 | 2497 | - | 2552 | = | -55 | * | (51 | / | 213) | = | -13.16901405 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Twin Lakes 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 | 33368 | 2420 | - | 2436 | = | -16 | * | (65 | / | 229) | = | -4.5414847 | ||
| 4 | 33370 | 2427 | - | 2485 | = | -58 | * | (45 | / | 229) | = | -11.3973799 | ||
| 5 | 33372 | 2462 | - | 2528 | = | -66 | * | (66 | / | 229) | = | -19.021834 | ||
| 6 | 33374 | 2491 | - | 2552 | = | -61 | * | (53 | / | 229) | = | -14.11790393 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Twin Lakes Elementary | -49 | ||||||||||||
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 | 33541 | 2410 | - | 2436 | = | -26 | * | (43 | / | 196) | = | -5.70408163 | ||
| 4 | 33542 | 2431 | - | 2485 | = | -54 | * | (61 | / | 196) | = | -16.80612241 | ||
| 5 | 33543 | 2478 | - | 2528 | = | -50 | * | (40 | / | 196) | = | -10.2040816 | ||
| 6 | 33544 | 2526 | - | 2552 | = | -26 | * | (52 | / | 196) | = | -6.89795917 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Twin Lakes Elementary | -40 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -62 | -55 | -47 | -49 | -40 | -253.0 | -50.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -26.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -74.6
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 | 92% | 89% | 89% | 91% | 95% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Mountain View Elementary 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.
Twin Lakes Elementary math proficiency
Zero+ meets standard.
82% less $meal
79% less $meal
81% less $meal
86% less $meal
89% 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.