Vintage High (Data source)
Source data for Vintage High
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 |
||
| 8 | 1383568 | 0 | - | 2586 | = | * | (0 | / | 409) | = | ||||
| 11 | 1383571 | 2570 | - | 2628 | = | -58 | * | (409 | / | 409) | = | -58.0 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Vintage High | -58 | ||||||||||||
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 | 43586 | 2567 | - | 2628 | = | -61 | * | (388 | / | 388) | = | -61.0 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Vintage High | -61 | ||||||||||||
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 | 44653 | 2563 | - | 2628 | = | -65 | * | (431 | / | 431) | = | -65.0 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Vintage High | -65 | ||||||||||||
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 | 44671 | 2564 | - | 2628 | = | -64 | * | (402 | / | 402) | = | -64.0 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Vintage High | -64 | ||||||||||||
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 | 44809 | 2559 | - | 2628 | = | -69 | * | (396 | / | 396) | = | -69.0 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Vintage High | -69 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -58 | -61 | -65 | -64 | -69 | -317.0 | -63.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -51.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -75.4
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 | 36% | 40% | 40% | 41% | 40% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Napa Valley Unified school district | County of Napa
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.
Vintage High math proficiency
Zero+ meets standard.
28% less $meal
30% less $meal
30% less $meal
35% less $meal
34% 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.
High Schools (Public) schools in Napa Valley Unified (3)
| American Canyon High | Napa High | Vintage High |