Addison Elementary (Data source)
Source data for Addison 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 | 2699015 | 2478 | - | 2436 | = | 42 | * | (69 | / | 239) | = | 12.12552298 | ||
| 4 | 2699018 | 2547 | - | 2485 | = | 62 | * | (96 | / | 239) | = | 24.90376568 | ||
| 5 | 2699019 | 2573 | - | 2528 | = | 45 | * | (74 | / | 239) | = | 13.93305435 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Addison Elementary | 51 | ||||||||||||
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 | 82191 | 2483 | - | 2436 | = | 47 | * | (92 | / | 263) | = | 16.4410646 | ||
| 4 | 82193 | 2541 | - | 2485 | = | 56 | * | (71 | / | 263) | = | 15.11787071 | ||
| 5 | 82194 | 2589 | - | 2528 | = | 61 | * | (100 | / | 263) | = | 23.1939163 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Addison Elementary | 55 | ||||||||||||
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 | 84489 | 2507 | - | 2436 | = | 71 | * | (66 | / | 223) | = | 21.01345288 | ||
| 4 | 84491 | 2537 | - | 2485 | = | 52 | * | (88 | / | 223) | = | 20.52017937 | ||
| 5 | 84493 | 2574 | - | 2528 | = | 46 | * | (69 | / | 223) | = | 14.23318384 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Addison Elementary | 56 | ||||||||||||
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 | 84704 | 2496 | - | 2436 | = | 60 | * | (69 | / | 229) | = | 18.07860258 | ||
| 4 | 84707 | 2567 | - | 2485 | = | 82 | * | (69 | / | 229) | = | 24.70742353 | ||
| 5 | 84708 | 2557 | - | 2528 | = | 29 | * | (91 | / | 229) | = | 11.52401745 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Addison Elementary | 54 | ||||||||||||
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 | 85298 | 2497 | - | 2436 | = | 61 | * | (78 | / | 218) | = | 21.82568807 | ||
| 4 | 85299 | 2531 | - | 2485 | = | 46 | * | (72 | / | 218) | = | 15.19266053 | ||
| 5 | 85300 | 2576 | - | 2528 | = | 48 | * | (68 | / | 218) | = | 14.97247704 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Addison Elementary | 52 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 51 | 55 | 56 | 54 | 52 | 268.0 | 53.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 59.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 47.6
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 | 12% | 11% | 13% | 15% | 16% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Palo Alto Unified school district | County of Santa Clara
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.
Addison Elementary math proficiency
Zero+ meets standard.
8% less $meal
9% less $meal
10% less $meal
14% less $meal
12% 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.