Lancaster Alternative and Virtual Academies (Data source)
Source data for Lancaster Alternative and Virtual Academies
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 | 744665 | 0 | - | 2436 | = | * | (5 | / | 134) | = | ||||
| 4 | 744668 | 2368 | - | 2485 | = | -117 | * | (14 | / | 134) | = | -12.22388049 | ||
| 5 | 744669 | 2403 | - | 2528 | = | -125 | * | (11 | / | 134) | = | -10.261194 | ||
| 6 | 744672 | 2406 | - | 2552 | = | -146 | * | (23 | / | 134) | = | -25.05970149 | ||
| 7 | 744673 | 2432 | - | 2567 | = | -135 | * | (35 | / | 134) | = | -35.26119392 | ||
| 8 | 744676 | 2395 | - | 2586 | = | -191 | * | (46 | / | 134) | = | -65.56716416 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Lancaster Alternative and Virtual Academies | -148 | ||||||||||||
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 | 23426 | 0 | - | 2436 | = | * | (5 | / | 117) | = | ||||
| 4 | 23428 | 0 | - | 2485 | = | * | (3 | / | 117) | = | ||||
| 5 | 23431 | 2391 | - | 2528 | = | -137 | * | (19 | / | 117) | = | -22.24786319 | ||
| 6 | 23432 | 2428 | - | 2552 | = | -124 | * | (22 | / | 117) | = | -23.31623931 | ||
| 7 | 23435 | 2421 | - | 2567 | = | -146 | * | (22 | / | 117) | = | -27.45299145 | ||
| 8 | 23436 | 2415 | - | 2586 | = | -171 | * | (46 | / | 117) | = | -67.2307692 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Lancaster Alternative and Virtual Academies | -140 | ||||||||||||
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 | 23878 | 0 | - | 2436 | = | * | (0 | / | 75) | = | ||||
| 4 | 23880 | 0 | - | 2485 | = | * | (0 | / | 75) | = | ||||
| 5 | 23882 | 0 | - | 2528 | = | * | (0 | / | 75) | = | ||||
| 6 | 23883 | 0 | - | 2552 | = | * | (0 | / | 75) | = | ||||
| 7 | 23886 | 2434 | - | 2567 | = | -133 | * | (29 | / | 75) | = | -51.42666658 | ||
| 8 | 23887 | 2417 | - | 2586 | = | -169 | * | (30 | / | 75) | = | -67.6 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Lancaster Alternative and Virtual Academies | -119 | ||||||||||||
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 | 23899 | 0 | - | 2436 | = | * | (0 | / | 58) | = | ||||
| 4 | 23901 | 0 | - | 2485 | = | * | (0 | / | 58) | = | ||||
| 5 | 23903 | 0 | - | 2528 | = | * | (0 | / | 58) | = | ||||
| 6 | 23905 | 2361 | - | 2552 | = | -191 | * | (11 | / | 58) | = | -36.22413785 | ||
| 7 | 23907 | 2379 | - | 2567 | = | -188 | * | (14 | / | 58) | = | -45.37931028 | ||
| 8 | 23909 | 2415 | - | 2586 | = | -171 | * | (22 | / | 58) | = | -64.86206882 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Lancaster Alternative and Virtual Academies | -146 | ||||||||||||
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 | 24077 | 0 | - | 2436 | = | * | (6 | / | 90) | = | ||||
| 4 | 24078 | 0 | - | 2485 | = | * | (8 | / | 90) | = | ||||
| 5 | 24079 | 0 | - | 2528 | = | * | (9 | / | 90) | = | ||||
| 6 | 24080 | 2400 | - | 2552 | = | -152 | * | (16 | / | 90) | = | -27.0222221 | ||
| 7 | 24081 | 2398 | - | 2567 | = | -169 | * | (22 | / | 90) | = | -41.31111104 | ||
| 8 | 24082 | 2379 | - | 2586 | = | -207 | * | (29 | / | 90) | = | -66.69999995 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Lancaster Alternative and Virtual Academies | -135 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -148 | -140 | -119 | -146 | -135 | -688.0 | -137.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -104.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -170.6
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 | 69% | 69% | 53% | 97% | 93% |
| 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.
Lancaster Alternative and Virtual Academies math proficiency
Zero+ meets standard.
68% less $meal
68% less $meal
53% less $meal
93% less $meal
87% 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.
Alternative Schools of Choice schools in Lancaster Elementary (1)
| Lancaster Alternative and Virtual Academies |