Arroyo (Data source)
Source data for Arroyo
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 |
||
4 | 79808 | 2528 | - | 2485 | = | 43 | * | (162 | / | 335) | = | 20.79402983 | ||
5 | 79810 | 2546 | - | 2528 | = | 18 | * | (173 | / | 335) | = | 9.29552238 | ||
Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Arroyo | 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 |
||
4 | 79947 | 2532 | - | 2485 | = | 47 | * | (155 | / | 328) | = | 22.21036583 | ||
5 | 79949 | 2567 | - | 2528 | = | 39 | * | (173 | / | 328) | = | 20.57012194 | ||
Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Arroyo | 43 |
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 |
||
4 | 80440 | 2539 | - | 2485 | = | 54 | * | (131 | / | 282) | = | 25.08510638 | ||
5 | 80441 | 2558 | - | 2528 | = | 30 | * | (151 | / | 282) | = | 16.06382976 | ||
Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Arroyo | 41 |
Last steps
Compute the average
2017 | 2018 | 2019 | Sum | Average |
---|---|---|---|---|
30 | 43 | 41 | 114.0 | 38.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 59.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 17.0
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:
2017 | 2018 | 2019 | |
---|---|---|---|
Percent | 2% | 7% | 7% |
Data source | 2017 data file | 2018 data file | 2019 data file |
San Carlos Elementary school district County of San Mateo
THIS chart shows what the school system "wants"
PLUS a "special" or "outside" cause of variation, parent education.
NOT what teachers want.
NOT what principals want.
NOT what parents want.
Arroyo math proficiency
Zero+ meets standard.
2% less $meal
6% less $meal
7% 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.
Elementary School (Public) schools in San Carlos Elementary (3)
Arroyo | Heather Elementary | Mariposa |