Leo R. Croce Elementary (Data source)
Source data for Leo R. Croce 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 | 60402 | 2443 | - | 2436 | = | 7 | * | (95 | / | 276) | = | 2.40942029 | ||
| 4 | 60403 | 2446 | - | 2485 | = | -39 | * | (89 | / | 276) | = | -12.57608695 | ||
| 5 | 60406 | 2475 | - | 2528 | = | -53 | * | (92 | / | 276) | = | -17.66666665 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Leo R. Croce Elementary | -28 | ||||||||||||
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 | 1604 | 2438 | - | 2436 | = | 2 | * | (99 | / | 283) | = | 0.69964664 | ||
| 4 | 1606 | 2462 | - | 2485 | = | -23 | * | (96 | / | 283) | = | -7.80212012 | ||
| 5 | 1608 | 2468 | - | 2528 | = | -60 | * | (88 | / | 283) | = | -18.65724378 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Leo R. Croce Elementary | -26 | ||||||||||||
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 | 1652 | 2411 | - | 2436 | = | -25 | * | (96 | / | 289) | = | -8.30449825 | ||
| 4 | 1654 | 2469 | - | 2485 | = | -16 | * | (102 | / | 289) | = | -5.64705882 | ||
| 5 | 1655 | 2481 | - | 2528 | = | -47 | * | (91 | / | 289) | = | -14.79930792 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Leo R. Croce Elementary | -29 | ||||||||||||
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 | 1668 | 2443 | - | 2436 | = | 7 | * | (92 | / | 287) | = | 2.24390244 | ||
| 4 | 1670 | 2472 | - | 2485 | = | -13 | * | (89 | / | 287) | = | -4.03135888 | ||
| 5 | 1672 | 2476 | - | 2528 | = | -52 | * | (106 | / | 287) | = | -19.20557491 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Leo R. Croce Elementary | -21 | ||||||||||||
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 | 1693 | 2439 | - | 2436 | = | 3 | * | (92 | / | 272) | = | 1.01470588 | ||
| 4 | 1694 | 2485 | - | 2485 | = | 0 | * | (93 | / | 272) | = | 0.0 | ||
| 5 | 1695 | 2494 | - | 2528 | = | -34 | * | (87 | / | 272) | = | -10.87499999 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Leo R. Croce Elementary | -10 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -28 | -26 | -29 | -21 | -10 | -114.0 | -22.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -1.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -43.8
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 | 27% | 22% | 22% | 24% | 25% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Livermore Valley Joint Unified school district | County of Alameda
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.
Leo R. Croce Elementary math proficiency
Zero+ meets standard.
22% less $meal
19% less $meal
18% less $meal
21% less $meal
22% 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.