Marshall Middle (Data source)
Source data for Marshall Middle
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 |
||
| 6 | 2278829 | 2600 | - | 2552 | = | 48 | * | (592 | / | 1592) | = | 17.84924621 | ||
| 7 | 2278830 | 2589 | - | 2567 | = | 22 | * | (476 | / | 1592) | = | 6.57788943 | ||
| 8 | 2278833 | 2641 | - | 2586 | = | 55 | * | (524 | / | 1592) | = | 18.10301504 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Marshall Middle | 43 | ||||||||||||
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 |
||
| 6 | 69864 | 2606 | - | 2552 | = | 54 | * | (511 | / | 1588) | = | 17.3765743 | ||
| 7 | 69865 | 2613 | - | 2567 | = | 46 | * | (598 | / | 1588) | = | 17.32241812 | ||
| 8 | 69868 | 2625 | - | 2586 | = | 39 | * | (479 | / | 1588) | = | 11.76385388 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Marshall Middle | 46 | ||||||||||||
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 |
||
| 6 | 71698 | 2607 | - | 2552 | = | 55 | * | (513 | / | 1590) | = | 17.745283 | ||
| 7 | 71701 | 2624 | - | 2567 | = | 57 | * | (504 | / | 1590) | = | 18.06792452 | ||
| 8 | 71703 | 2636 | - | 2586 | = | 50 | * | (573 | / | 1590) | = | 18.0188679 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Marshall Middle | 54 | ||||||||||||
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 |
||
| 6 | 71844 | 2601 | - | 2552 | = | 49 | * | (482 | / | 1480) | = | 15.95810808 | ||
| 7 | 71846 | 2624 | - | 2567 | = | 57 | * | (503 | / | 1480) | = | 19.37229725 | ||
| 8 | 71848 | 2648 | - | 2586 | = | 62 | * | (495 | / | 1480) | = | 20.73648646 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Marshall Middle | 56 | ||||||||||||
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 |
||
| 6 | 72329 | 2604 | - | 2552 | = | 52 | * | (498 | / | 1451) | = | 17.84700206 | ||
| 7 | 72330 | 2621 | - | 2567 | = | 54 | * | (468 | / | 1451) | = | 17.41695377 | ||
| 8 | 72331 | 2646 | - | 2586 | = | 60 | * | (485 | / | 1451) | = | 20.05513434 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Marshall Middle | 55 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 43 | 46 | 54 | 56 | 55 | 254.0 | 50.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 65.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 35.8
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 | 11% | 13% | 12% | 12% | 11% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
San Diego Unified school district | County of San Diego
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.
Marshall Middle math proficiency
Zero+ meets standard.
9% less $meal
11% less $meal
10% less $meal
10% less $meal
9% 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.