Nordstrom Elementary (Data source)
Source data for Nordstrom 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 | 2677909 | 2455 | - | 2436 | = | 19 | * | (95 | / | 370) | = | 4.87837836 | ||
| 4 | 2677912 | 2482 | - | 2485 | = | -3 | * | (95 | / | 370) | = | -0.77027027 | ||
| 5 | 2677913 | 2541 | - | 2528 | = | 13 | * | (89 | / | 370) | = | 3.12702702 | ||
| 6 | 2677916 | 2562 | - | 2552 | = | 10 | * | (91 | / | 370) | = | 2.45945945 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Nordstrom Elementary | 10 | ||||||||||||
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 | 81611 | 2480 | - | 2436 | = | 44 | * | (107 | / | 399) | = | 11.79949874 | ||
| 4 | 81612 | 2493 | - | 2485 | = | 8 | * | (108 | / | 399) | = | 2.16541353 | ||
| 5 | 81614 | 2539 | - | 2528 | = | 11 | * | (95 | / | 399) | = | 2.61904762 | ||
| 6 | 81616 | 2598 | - | 2552 | = | 46 | * | (89 | / | 399) | = | 10.26065162 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Nordstrom Elementary | 27 | ||||||||||||
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 | 83882 | 2483 | - | 2436 | = | 47 | * | (100 | / | 311) | = | 15.11254018 | ||
| 4 | 83885 | 2512 | - | 2485 | = | 27 | * | (106 | / | 311) | = | 9.20257232 | ||
| 5 | 83887 | 2510 | - | 2528 | = | -18 | * | (105 | / | 311) | = | -6.0771704 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Nordstrom Elementary | 18 | ||||||||||||
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 | 84105 | 2458 | - | 2436 | = | 22 | * | (90 | / | 280) | = | 7.07142856 | ||
| 4 | 84106 | 2507 | - | 2485 | = | 22 | * | (96 | / | 280) | = | 7.54285712 | ||
| 5 | 84109 | 2526 | - | 2528 | = | -2 | * | (94 | / | 280) | = | -0.67142857 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Nordstrom Elementary | 14 | ||||||||||||
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 | 84720 | 2452 | - | 2436 | = | 16 | * | (105 | / | 286) | = | 5.87412587 | ||
| 4 | 84721 | 2507 | - | 2485 | = | 22 | * | (90 | / | 286) | = | 6.92307691 | ||
| 5 | 84722 | 2540 | - | 2528 | = | 12 | * | (91 | / | 286) | = | 3.81818182 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Nordstrom Elementary | 17 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 10 | 27 | 18 | 14 | 17 | 86.0 | 17.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 35.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -0.8
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 | 17% | 20% | 23% | 21% | 17% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Morgan Hill 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.
Nordstrom Elementary math proficiency
Zero+ meets standard.
13% less $meal
15% less $meal
20% less $meal
19% less $meal
15% 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.