Placer County Community Schools (Data source)
Source data for Placer County Community Schools
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 | 1590450 | 0 | - | 2586 | = | * | (3 | / | 18) | = | ||||
| 11 | 1590451 | 2421 | - | 2628 | = | -207 | * | (15 | / | 18) | = | -172.49999993 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Placer County Community Schools | -172 | ||||||||||||
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 | 49748 | 0 | - | 2567 | = | * | (1 | / | 16) | = | ||||
| 8 | 49751 | 0 | - | 2586 | = | * | (3 | / | 16) | = | ||||
| 11 | 49752 | 2458 | - | 2628 | = | -170 | * | (12 | / | 16) | = | -127.5 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Placer County Community Schools | -128 | ||||||||||||
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 |
||
| 7 | 51141 | 0 | - | 2567 | = | * | (0 | / | 15) | = | ||||
| 8 | 51143 | 0 | - | 2586 | = | * | (0 | / | 15) | = | ||||
| 11 | 51145 | 2429 | - | 2628 | = | -199 | * | (11 | / | 15) | = | -145.93333327 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Placer County Community Schools | -146 | ||||||||||||
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 | 51177 | 2394 | - | 2628 | = | -234 | * | (13 | / | 13) | = | -234.0 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Placer County Community Schools | -234 | ||||||||||||
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 | 51380 | 0 | - | 2586 | = | * | (0 | / | 19) | = | ||||
| 11 | 51381 | 2448 | - | 2628 | = | -180 | * | (18 | / | 19) | = | -170.52631578 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Placer County Community Schools | -171 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -172 | -128 | -146 | -234 | -171 | -851.0 | -170.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -50.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -290.2
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 | 71% | 97% | 78% | 89% | 100% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Placer County Office of Education school district | County of Placer
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.
Placer County Community Schools math proficiency
Zero+ meets standard.
71% less $meal
97% less $meal
78% less $meal
89% less $meal
100% 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.
County Community schools in Placer County Office of Education (1)
| Placer County Community Schools |