Alexander Valley Elementary (Data source)
Source data for Alexander Valley Elementary
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 |
||
| 3 | 2852073 | 2459 | - | 2436 | = | 23 | * | (17 | / | 68) | = | 5.75 | ||
| 4 | 2852074 | 2475 | - | 2485 | = | -10 | * | (17 | / | 68) | = | -2.5 | ||
| 5 | 2852077 | 2538 | - | 2528 | = | 10 | * | (16 | / | 68) | = | 2.35294117 | ||
| 6 | 2852078 | 2598 | - | 2552 | = | 46 | * | (18 | / | 68) | = | 12.17647057 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Alexander Valley Elementary | 18 | ||||||||||||
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 |
||
| 3 | 87191 | 2447 | - | 2436 | = | 11 | * | (19 | / | 62) | = | 3.37096773 | ||
| 4 | 87192 | 2479 | - | 2485 | = | -6 | * | (15 | / | 62) | = | -1.4516129 | ||
| 5 | 87195 | 2528 | - | 2528 | = | 0 | * | (16 | / | 62) | = | 0.0 | ||
| 6 | 87197 | 2609 | - | 2552 | = | 57 | * | (12 | / | 62) | = | 11.03225806 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Alexander Valley Elementary | 13 | ||||||||||||
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 |
||
| 3 | 89645 | 2458 | - | 2436 | = | 22 | * | (16 | / | 65) | = | 5.41538461 | ||
| 4 | 89648 | 2477 | - | 2485 | = | -8 | * | (18 | / | 65) | = | -2.21538461 | ||
| 5 | 89650 | 2485 | - | 2528 | = | -43 | * | (17 | / | 65) | = | -11.24615382 | ||
| 6 | 89652 | 2608 | - | 2552 | = | 56 | * | (14 | / | 65) | = | 12.06153844 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Alexander Valley Elementary | 4 | ||||||||||||
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 |
||
| 3 | 89857 | 2462 | - | 2436 | = | 26 | * | (17 | / | 59) | = | 7.49152542 | ||
| 4 | 89858 | 2497 | - | 2485 | = | 12 | * | (11 | / | 59) | = | 2.23728812 | ||
| 5 | 89861 | 2522 | - | 2528 | = | -6 | * | (17 | / | 59) | = | -1.72881356 | ||
| 6 | 89862 | 2564 | - | 2552 | = | 12 | * | (14 | / | 59) | = | 2.84745762 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Alexander Valley Elementary | 11 | ||||||||||||
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 |
||
| 3 | 90485 | 2457 | - | 2436 | = | 21 | * | (15 | / | 56) | = | 5.62499998 | ||
| 4 | 90486 | 2526 | - | 2485 | = | 41 | * | (14 | / | 56) | = | 10.25 | ||
| 5 | 90487 | 2562 | - | 2528 | = | 34 | * | (11 | / | 56) | = | 6.67857141 | ||
| 6 | 90488 | 2607 | - | 2552 | = | 55 | * | (16 | / | 56) | = | 15.71428568 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Alexander Valley Elementary | 38 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 18 | 13 | 4 | 11 | 38 | 84.0 | 16.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 52.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -19.2
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 | 30% | 26% | 26% | 23% | 23% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Alexander Valley Union Elementary school district | County of Sonoma
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.
Alexander Valley Elementary math proficiency
Zero+ meets standard.
21% less $meal
20% less $meal
19% less $meal
22% less $meal
20% 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 in 1 School District (Public) schools in Alexander Valley Union Elementary (1)
| Alexander Valley Elementary |