James K. Polk Elementary (Data source)
Source data for James K. Polk 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 | 374098 | 2434 | - | 2436 | = | -2 | * | (108 | / | 450) | = | -0.48 | ||
| 4 | 374099 | 2435 | - | 2485 | = | -50 | * | (124 | / | 450) | = | -13.77777775 | ||
| 5 | 374102 | 2479 | - | 2528 | = | -49 | * | (102 | / | 450) | = | -11.10666663 | ||
| 6 | 374103 | 2531 | - | 2552 | = | -21 | * | (116 | / | 450) | = | -5.41333332 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for James K. Polk Elementary | -31 | ||||||||||||
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 | 11348 | 2430 | - | 2436 | = | -6 | * | (110 | / | 461) | = | -1.43167028 | ||
| 4 | 11350 | 2467 | - | 2485 | = | -18 | * | (114 | / | 461) | = | -4.45119305 | ||
| 5 | 11352 | 2485 | - | 2528 | = | -43 | * | (132 | / | 461) | = | -12.31236441 | ||
| 6 | 11353 | 2533 | - | 2552 | = | -19 | * | (105 | / | 461) | = | -4.32754879 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for James K. Polk Elementary | -23 | ||||||||||||
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 | 11672 | 2450 | - | 2436 | = | 14 | * | (103 | / | 465) | = | 3.10107526 | ||
| 4 | 11673 | 2459 | - | 2485 | = | -26 | * | (111 | / | 465) | = | -6.2064516 | ||
| 5 | 11675 | 2479 | - | 2528 | = | -49 | * | (117 | / | 465) | = | -12.32903225 | ||
| 6 | 11678 | 2527 | - | 2552 | = | -25 | * | (134 | / | 465) | = | -7.20430108 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for James K. Polk Elementary | -23 | ||||||||||||
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 | 11703 | 2463 | - | 2436 | = | 27 | * | (106 | / | 439) | = | 6.51936217 | ||
| 4 | 11706 | 2462 | - | 2485 | = | -23 | * | (104 | / | 439) | = | -5.44874715 | ||
| 5 | 11707 | 2494 | - | 2528 | = | -34 | * | (110 | / | 439) | = | -8.51936218 | ||
| 6 | 11710 | 2524 | - | 2552 | = | -28 | * | (119 | / | 439) | = | -7.58997722 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for James K. Polk Elementary | -15 | ||||||||||||
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 | 11796 | 2466 | - | 2436 | = | 30 | * | (113 | / | 440) | = | 7.70454543 | ||
| 4 | 11797 | 2479 | - | 2485 | = | -6 | * | (105 | / | 440) | = | -1.43181818 | ||
| 5 | 11798 | 2491 | - | 2528 | = | -37 | * | (105 | / | 440) | = | -8.82954543 | ||
| 6 | 11799 | 2542 | - | 2552 | = | -10 | * | (117 | / | 440) | = | -2.6590909 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for James K. Polk Elementary | -5 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -31 | -23 | -23 | -15 | -5 | -97.0 | -19.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 7.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -46.4
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 | 66% | 75% | 63% | 68% | 77% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Central Unified school district | County of Fresno
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.
James K. Polk Elementary math proficiency
Zero+ meets standard.
54% less $meal
59% less $meal
53% less $meal
60% less $meal
60% 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.