Corona Ranch Elementary (Data source)
Source data for Corona Ranch 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 | 1668693 | 2430 | - | 2436 | = | -6 | * | (156 | / | 657) | = | -1.42465753 | ||
| 4 | 1668694 | 2471 | - | 2485 | = | -14 | * | (174 | / | 657) | = | -3.70776255 | ||
| 5 | 1668697 | 2514 | - | 2528 | = | -14 | * | (156 | / | 657) | = | -3.32420091 | ||
| 6 | 1668698 | 2536 | - | 2552 | = | -16 | * | (171 | / | 657) | = | -4.16438355 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Corona Ranch Elementary | -13 | ||||||||||||
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 | 52069 | 2450 | - | 2436 | = | 14 | * | (152 | / | 635) | = | 3.35118109 | ||
| 4 | 52071 | 2478 | - | 2485 | = | -7 | * | (157 | / | 635) | = | -1.73070866 | ||
| 5 | 52073 | 2515 | - | 2528 | = | -13 | * | (176 | / | 635) | = | -3.6031496 | ||
| 6 | 52075 | 2560 | - | 2552 | = | 8 | * | (150 | / | 635) | = | 1.88976378 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Corona Ranch Elementary | 0 | ||||||||||||
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 | 53587 | 2449 | - | 2436 | = | 13 | * | (144 | / | 636) | = | 2.94339622 | ||
| 4 | 53590 | 2484 | - | 2485 | = | -1 | * | (156 | / | 636) | = | -0.24528302 | ||
| 5 | 53592 | 2508 | - | 2528 | = | -20 | * | (165 | / | 636) | = | -5.18867924 | ||
| 6 | 53593 | 2548 | - | 2552 | = | -4 | * | (171 | / | 636) | = | -1.0754717 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Corona Ranch Elementary | -4 | ||||||||||||
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 | 53677 | 2444 | - | 2436 | = | 8 | * | (130 | / | 586) | = | 1.77474402 | ||
| 4 | 53678 | 2476 | - | 2485 | = | -9 | * | (142 | / | 586) | = | -2.18088737 | ||
| 5 | 53681 | 2535 | - | 2528 | = | 7 | * | (155 | / | 586) | = | 1.85153583 | ||
| 6 | 53682 | 2543 | - | 2552 | = | -9 | * | (159 | / | 586) | = | -2.44197952 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Corona Ranch Elementary | -1 | ||||||||||||
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 | 53912 | 2443 | - | 2436 | = | 7 | * | (148 | / | 576) | = | 1.79861111 | ||
| 4 | 53913 | 2475 | - | 2485 | = | -10 | * | (130 | / | 576) | = | -2.25694444 | ||
| 5 | 53914 | 2518 | - | 2528 | = | -10 | * | (146 | / | 576) | = | -2.53472222 | ||
| 6 | 53915 | 2564 | - | 2552 | = | 12 | * | (152 | / | 576) | = | 3.16666666 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Corona Ranch Elementary | 0 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -13 | 0 | -4 | -1 | 0 | -18.0 | -3.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 12.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -24.0
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 | 53% | 52% | 51% | 54% | 54% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Corona-Norco Unified school district | County of Riverside
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.
Corona Ranch Elementary math proficiency
Zero+ meets standard.
45% less $meal
44% less $meal
44% 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.