Barfield Elementary (Data source)
Source data for Barfield 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 | 1094737 | 2386 | - | 2436 | = | -50 | * | (54 | / | 197) | = | -13.70558375 | ||
| 4 | 1094738 | 2439 | - | 2485 | = | -46 | * | (53 | / | 197) | = | -12.37563447 | ||
| 5 | 1094741 | 2442 | - | 2528 | = | -86 | * | (42 | / | 197) | = | -18.33502533 | ||
| 6 | 1094742 | 2474 | - | 2552 | = | -78 | * | (48 | / | 197) | = | -19.00507612 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Barfield Elementary | -63 | ||||||||||||
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 | 34266 | 2420 | - | 2436 | = | -16 | * | (34 | / | 176) | = | -3.09090909 | ||
| 4 | 34268 | 2449 | - | 2485 | = | -36 | * | (49 | / | 176) | = | -10.02272724 | ||
| 5 | 34269 | 2440 | - | 2528 | = | -88 | * | (51 | / | 176) | = | -25.49999998 | ||
| 6 | 34271 | 2447 | - | 2552 | = | -105 | * | (42 | / | 176) | = | -25.05681812 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Barfield Elementary | -64 | ||||||||||||
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 | 34877 | 2372 | - | 2436 | = | -64 | * | (50 | / | 190) | = | -16.84210522 | ||
| 4 | 34879 | 2430 | - | 2485 | = | -55 | * | (32 | / | 190) | = | -9.26315786 | ||
| 5 | 34882 | 2456 | - | 2528 | = | -72 | * | (55 | / | 190) | = | -20.84210525 | ||
| 6 | 34883 | 2485 | - | 2552 | = | -67 | * | (53 | / | 190) | = | -18.68947366 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Barfield Elementary | -66 | ||||||||||||
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 | 34888 | 2383 | - | 2436 | = | -53 | * | (43 | / | 180) | = | -12.66111106 | ||
| 4 | 34890 | 2403 | - | 2485 | = | -82 | * | (55 | / | 180) | = | -25.05555551 | ||
| 5 | 34892 | 2483 | - | 2528 | = | -45 | * | (32 | / | 180) | = | -7.99999997 | ||
| 6 | 34894 | 2478 | - | 2552 | = | -74 | * | (50 | / | 180) | = | -20.5555555 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Barfield Elementary | -66 | ||||||||||||
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 | 35063 | 2389 | - | 2436 | = | -47 | * | (54 | / | 180) | = | -14.1 | ||
| 4 | 35064 | 2426 | - | 2485 | = | -59 | * | (42 | / | 180) | = | -13.76666665 | ||
| 5 | 35065 | 2444 | - | 2528 | = | -84 | * | (52 | / | 180) | = | -24.26666659 | ||
| 6 | 35066 | 2503 | - | 2552 | = | -49 | * | (32 | / | 180) | = | -8.71111107 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Barfield Elementary | -61 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -63 | -64 | -66 | -66 | -61 | -320.0 | -64.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -58.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -70.0
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% | 93% | 92% | 95% | 97% |
| 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.
Barfield Elementary math proficiency
Zero+ meets standard.
83% less $meal
85% less $meal
84% less $meal
86% less $meal
88% 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.