Birney Tech Academy (Data source)
Source data for Birney Tech Academy
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 | 696506 | 2408 | - | 2436 | = | -28 | * | (72 | / | 242) | = | -8.33057851 | ||
| 4 | 696507 | 2396 | - | 2485 | = | -89 | * | (88 | / | 242) | = | -32.36363631 | ||
| 5 | 696510 | 2417 | - | 2528 | = | -111 | * | (82 | / | 242) | = | -37.61157023 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Birney Tech Academy | -78 | ||||||||||||
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 | 22013 | 2414 | - | 2436 | = | -22 | * | (66 | / | 237) | = | -6.12658226 | ||
| 4 | 22015 | 2424 | - | 2485 | = | -61 | * | (79 | / | 237) | = | -20.33333331 | ||
| 5 | 22017 | 2404 | - | 2528 | = | -124 | * | (92 | / | 237) | = | -48.1350211 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Birney Tech Academy | -75 | ||||||||||||
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 | 22434 | 2401 | - | 2436 | = | -35 | * | (82 | / | 230) | = | -12.47826087 | ||
| 4 | 22436 | 2435 | - | 2485 | = | -50 | * | (75 | / | 230) | = | -16.3043478 | ||
| 5 | 22438 | 2451 | - | 2528 | = | -77 | * | (73 | / | 230) | = | -24.43913041 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Birney Tech Academy | -53 | ||||||||||||
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 | 22423 | 2409 | - | 2436 | = | -27 | * | (70 | / | 239) | = | -7.90794978 | ||
| 4 | 22425 | 2426 | - | 2485 | = | -59 | * | (89 | / | 239) | = | -21.97071128 | ||
| 5 | 22426 | 2454 | - | 2528 | = | -74 | * | (80 | / | 239) | = | -24.76987444 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Birney Tech Academy | -55 | ||||||||||||
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 | 22606 | 2373 | - | 2436 | = | -63 | * | (75 | / | 238) | = | -19.85294115 | ||
| 4 | 22607 | 2455 | - | 2485 | = | -30 | * | (72 | / | 238) | = | -9.07563024 | ||
| 5 | 22608 | 2446 | - | 2528 | = | -82 | * | (91 | / | 238) | = | -31.35294116 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Birney Tech Academy | -60 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -78 | -75 | -53 | -55 | -60 | -321.0 | -64.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -31.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -97.2
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 | 80% | 74% | 78% | 74% | 74% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
El Rancho 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.
Birney Tech Academy math proficiency
Zero+ meets standard.
64% less $meal
61% less $meal
60% less $meal
59% less $meal
61% 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.