Turtleback Elementary (Data source)
Source data for Turtleback 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 | 2211809 | 2452 | - | 2436 | = | 16 | * | (91 | / | 257) | = | 5.66536965 | ||
| 4 | 2211810 | 2511 | - | 2485 | = | 26 | * | (78 | / | 257) | = | 7.89105057 | ||
| 5 | 2211813 | 2534 | - | 2528 | = | 6 | * | (88 | / | 257) | = | 2.05447471 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Turtleback Elementary | 16 | ||||||||||||
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 | 67874 | 2468 | - | 2436 | = | 32 | * | (98 | / | 294) | = | 10.66666666 | ||
| 4 | 67876 | 2505 | - | 2485 | = | 20 | * | (99 | / | 294) | = | 6.73469386 | ||
| 5 | 67878 | 2550 | - | 2528 | = | 22 | * | (97 | / | 294) | = | 7.25850338 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Turtleback Elementary | 25 | ||||||||||||
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 | 69675 | 2469 | - | 2436 | = | 33 | * | (103 | / | 282) | = | 12.05319146 | ||
| 4 | 69677 | 2510 | - | 2485 | = | 25 | * | (87 | / | 282) | = | 7.71276595 | ||
| 5 | 69679 | 2550 | - | 2528 | = | 22 | * | (92 | / | 282) | = | 7.17730495 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Turtleback Elementary | 27 | ||||||||||||
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 | 69837 | 2481 | - | 2436 | = | 45 | * | (77 | / | 270) | = | 12.83333333 | ||
| 4 | 69840 | 2515 | - | 2485 | = | 30 | * | (101 | / | 270) | = | 11.22222222 | ||
| 5 | 69841 | 2554 | - | 2528 | = | 26 | * | (92 | / | 270) | = | 8.85925924 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Turtleback Elementary | 33 | ||||||||||||
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 | 70359 | 2473 | - | 2436 | = | 37 | * | (95 | / | 283) | = | 12.42049467 | ||
| 4 | 70360 | 2514 | - | 2485 | = | 29 | * | (89 | / | 283) | = | 9.12014133 | ||
| 5 | 70361 | 2548 | - | 2528 | = | 20 | * | (99 | / | 283) | = | 6.99646642 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Turtleback Elementary | 29 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 16 | 25 | 27 | 33 | 29 | 130.0 | 26.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 44.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 8.0
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:
| 2015 | 2016 | 2017 | 2018 | 2019 | |
|---|---|---|---|---|---|
| Percent | 17% | 16% | 13% | 16% | 18% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Poway 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.
Turtleback Elementary math proficiency
Zero+ meets standard.
9% less $meal
9% less $meal
8% less $meal
13% less $meal
16% 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.