Washington Elementary (Data source)
Source data for Washington 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 | 1096062 | 2373 | - | 2436 | = | -63 | * | (108 | / | 318) | = | -21.39622638 | ||
4 | 1096065 | 2425 | - | 2485 | = | -60 | * | (104 | / | 318) | = | -19.6226415 | ||
5 | 1096066 | 2457 | - | 2528 | = | -71 | * | (106 | / | 318) | = | -23.66666664 | ||
Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Washington Elementary | -65 |
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 | 34308 | 2391 | - | 2436 | = | -45 | * | (137 | / | 355) | = | -17.36619714 | ||
4 | 34310 | 2404 | - | 2485 | = | -81 | * | (112 | / | 355) | = | -25.55492952 | ||
5 | 34312 | 2452 | - | 2528 | = | -76 | * | (106 | / | 355) | = | -22.69295772 | ||
Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Washington Elementary | -66 |
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 | 34919 | 2400 | - | 2436 | = | -36 | * | (83 | / | 297) | = | -10.06060604 | ||
4 | 34922 | 2425 | - | 2485 | = | -60 | * | (113 | / | 297) | = | -22.8282828 | ||
5 | 34923 | 2457 | - | 2528 | = | -71 | * | (101 | / | 297) | = | -24.14478114 | ||
Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Washington Elementary | -57 |
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 | 34929 | 2394 | - | 2436 | = | -42 | * | (132 | / | 336) | = | -16.49999996 | ||
4 | 34931 | 2424 | - | 2485 | = | -61 | * | (84 | / | 336) | = | -15.25 | ||
5 | 34933 | 2446 | - | 2528 | = | -82 | * | (120 | / | 336) | = | -29.28571427 | ||
Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Washington Elementary | -61 |
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 | 35104 | 2403 | - | 2436 | = | -33 | * | (111 | / | 311) | = | -11.77813504 | ||
4 | 35105 | 2434 | - | 2485 | = | -51 | * | (113 | / | 311) | = | -18.5305466 | ||
5 | 35106 | 2460 | - | 2528 | = | -68 | * | (87 | / | 311) | = | -19.02250802 | ||
Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Washington Elementary | -49 |
Last steps
Compute the average
2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
---|---|---|---|---|---|---|
-65 | -66 | -57 | -61 | -49 | -298.0 | -59.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -41.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -77.6
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 | 94% | 96% | 97% | 99% | 96% |
Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Pomona 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.
Washington Elementary math proficiency
Zero+ meets standard.
87% less $meal
88% less $meal
88% less $meal
93% less $meal
90% 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.