L.A. County High School for the Arts (Data source)
Source data for L.A. County High School for the Arts
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 |
||
| 11 | 600953 | 2597 | - | 2628 | = | -31 | * | (130 | / | 130) | = | -31.0 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for L.A. County High School for the Arts | -31 | ||||||||||||
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 |
||
| 11 | 19276 | 2606 | - | 2628 | = | -22 | * | (107 | / | 107) | = | -22.0 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for L.A. County High School for the Arts | -22 | ||||||||||||
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 |
||
| 11 | 19584 | 2598 | - | 2628 | = | -30 | * | (110 | / | 110) | = | -30.0 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for L.A. County High School for the Arts | -30 | ||||||||||||
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 |
||
| 11 | 19573 | 2588 | - | 2628 | = | -40 | * | (48 | / | 48) | = | -40.0 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for L.A. County High School for the Arts | -40 | ||||||||||||
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 |
||
| 11 | 19760 | 2630 | - | 2628 | = | 2 | * | (127 | / | 127) | = | 2.0 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for L.A. County High School for the Arts | 2 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -31 | -22 | -30 | -40 | 2 | -121.0 | -24.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 20.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -69.2
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 | 5% | 10% | 8% | 18% | 18% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Los Angeles County Office of Education 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.
L.A. County High School for the Arts math proficiency
Zero+ meets standard.
4% less $meal
8% less $meal
6% less $meal
16% less $meal
16% 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.
Opportunity Schools schools in Los Angeles County Office of Education (2)
| International Polytechnic High | L.A. County High School for the Arts |