Vista Alternative (Data source)
Source data for Vista Alternative
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 |
||
| 7 | 28226 | 0 | - | 2567 | = | * | (1 | / | 16) | = | ||||
| 8 | 28227 | 0 | - | 2586 | = | * | (6 | / | 16) | = | ||||
| 11 | 28230 | 2527 | - | 2628 | = | -101 | * | (9 | / | 16) | = | -56.8125 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Vista Alternative | -57 | ||||||||||||
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 |
||
| 7 | 748 | 0 | - | 2567 | = | * | (3 | / | 14) | = | ||||
| 11 | 749 | 2477 | - | 2628 | = | -151 | * | (11 | / | 14) | = | -118.64285704 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Vista Alternative | -119 | ||||||||||||
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 |
||
| 8 | 790 | 0 | - | 2586 | = | * | (0 | / | 11) | = | ||||
| 11 | 792 | 0 | - | 2628 | = | * | (0 | / | 11) | = | ||||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Vista Alternative | |||||||||||||
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 | 814 | 2450 | - | 2628 | = | -178 | * | (25 | / | 25) | = | -178.0 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Vista Alternative | -178 | ||||||||||||
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 |
||
| 8 | 838 | 0 | - | 2586 | = | * | (0 | / | 13) | = | ||||
| 11 | 839 | 2513 | - | 2628 | = | -115 | * | (12 | / | 13) | = | -106.15384615 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Vista Alternative | -106 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -57 | -119 | -178 | -106 | -460.0 | -92.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 32.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -262.0
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 | 17% | 21% | 29% | 36% | 56% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Fremont Unified school district | County of Alameda
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.
Vista Alternative math proficiency
Zero+ meets standard.
15% less $meal
21% less $meal
29% less $meal
36% 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 Fremont Unified (1)
| Vista Alternative |