Portola-Butler Continuation High (Data source)
Source data for Portola-Butler Continuation 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 |
||
| 11 | 1348298 | 2425 | - | 2628 | = | -203 | * | (35 | / | 35) | = | -203.0 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Portola-Butler Continuation High | -203 | ||||||||||||
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 | 42431 | 2408 | - | 2628 | = | -220 | * | (34 | / | 34) | = | -220.0 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Portola-Butler Continuation High | -220 | ||||||||||||
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 | 43496 | 2373 | - | 2628 | = | -255 | * | (28 | / | 28) | = | -255.0 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Portola-Butler Continuation High | -255 | ||||||||||||
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 | 43521 | 2385 | - | 2628 | = | -243 | * | (25 | / | 25) | = | -243.0 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Portola-Butler Continuation High | -243 | ||||||||||||
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 | 43645 | 2432 | - | 2628 | = | -196 | * | (27 | / | 27) | = | -196.0 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Portola-Butler Continuation High | -196 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -203 | -220 | -255 | -243 | -196 | -1117.0 | -223.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -148.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -298.4
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 | 82% | 65% | 67% | 87% | 86% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
South Monterey County Joint Union High school district | County of Monterey
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.
Portola-Butler Continuation High math proficiency
Zero+ meets standard.
81% less $meal
56% less $meal
62% less $meal
83% less $meal
81% 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.
Continuation High Schools schools in South Monterey County Joint Union High (1)
| Portola-Butler Continuation High |