Lincoln Elementary (Data source)
Source data for Lincoln 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 | 744029 | 2379 | - | 2436 | = | -57 | * | (139 | / | 456) | = | -17.37499998 | ||
| 4 | 744032 | 2420 | - | 2485 | = | -65 | * | (129 | / | 456) | = | -18.38815784 | ||
| 5 | 744033 | 2416 | - | 2528 | = | -112 | * | (125 | / | 456) | = | -30.70175438 | ||
| 6 | 744036 | 2514 | - | 2552 | = | -38 | * | (63 | / | 456) | = | -5.24999997 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Lincoln Elementary | -72 | ||||||||||||
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 | 23406 | 2375 | - | 2436 | = | -61 | * | (118 | / | 501) | = | -14.36726546 | ||
| 4 | 23409 | 2397 | - | 2485 | = | -88 | * | (136 | / | 501) | = | -23.88822348 | ||
| 5 | 23411 | 2424 | - | 2528 | = | -104 | * | (131 | / | 501) | = | -27.19361268 | ||
| 6 | 23412 | 2518 | - | 2552 | = | -34 | * | (62 | / | 501) | = | -4.20758483 | ||
| 7 | 23415 | 2563 | - | 2567 | = | -4 | * | (54 | / | 501) | = | -0.43113772 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Lincoln Elementary | -70 | ||||||||||||
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 | 23862 | 2367 | - | 2436 | = | -69 | * | (132 | / | 394) | = | -23.11675122 | ||
| 4 | 23865 | 2414 | - | 2485 | = | -71 | * | (124 | / | 394) | = | -22.34517765 | ||
| 5 | 23866 | 2413 | - | 2528 | = | -115 | * | (138 | / | 394) | = | -40.27918781 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Lincoln Elementary | -86 | ||||||||||||
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 | 23883 | 2366 | - | 2436 | = | -70 | * | (127 | / | 362) | = | -24.55801103 | ||
| 4 | 23885 | 2386 | - | 2485 | = | -99 | * | (112 | / | 362) | = | -30.62983424 | ||
| 5 | 23887 | 2431 | - | 2528 | = | -97 | * | (123 | / | 362) | = | -32.95856349 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Lincoln 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 | 24058 | 2356 | - | 2436 | = | -80 | * | (114 | / | 334) | = | -27.3053892 | ||
| 4 | 24059 | 2399 | - | 2485 | = | -86 | * | (124 | / | 334) | = | -31.92814371 | ||
| 5 | 24060 | 2396 | - | 2528 | = | -132 | * | (96 | / | 334) | = | -37.94011967 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Lincoln Elementary | -97 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -72 | -70 | -86 | -88 | -97 | -413.0 | -82.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -49.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -115.6
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 | 86% | 88% | 88% | 92% | 94% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Lancaster 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.
Lincoln Elementary math proficiency
Zero+ meets standard.
78% less $meal
85% less $meal
82% less $meal
85% less $meal
85% 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.