Rio del Mar Elementary (Data source)
Source data for Rio del Mar 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 | 2751077 | 2462 | - | 2436 | = | 26 | * | (90 | / | 363) | = | 6.44628098 | ||
| 4 | 2751078 | 2505 | - | 2485 | = | 20 | * | (89 | / | 363) | = | 4.90358126 | ||
| 5 | 2751081 | 2531 | - | 2528 | = | 3 | * | (89 | / | 363) | = | 0.73553719 | ||
| 6 | 2751082 | 2545 | - | 2552 | = | -7 | * | (95 | / | 363) | = | -1.83195592 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Rio del Mar Elementary | 10 | ||||||||||||
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 | 83680 | 2483 | - | 2436 | = | 47 | * | (69 | / | 347) | = | 9.34582131 | ||
| 4 | 83683 | 2510 | - | 2485 | = | 25 | * | (98 | / | 347) | = | 7.06051873 | ||
| 5 | 83684 | 2549 | - | 2528 | = | 21 | * | (91 | / | 347) | = | 5.5072046 | ||
| 6 | 83686 | 2550 | - | 2552 | = | -2 | * | (89 | / | 347) | = | -0.5129683 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Rio del Mar Elementary | 21 | ||||||||||||
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 | 85996 | 2457 | - | 2436 | = | 21 | * | (96 | / | 363) | = | 5.55371899 | ||
| 4 | 85998 | 2508 | - | 2485 | = | 23 | * | (77 | / | 363) | = | 4.87878788 | ||
| 5 | 86001 | 2518 | - | 2528 | = | -10 | * | (101 | / | 363) | = | -2.78236914 | ||
| 6 | 86003 | 2588 | - | 2552 | = | 36 | * | (89 | / | 363) | = | 8.82644627 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Rio del Mar Elementary | 16 | ||||||||||||
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 | 86228 | 2495 | - | 2436 | = | 59 | * | (70 | / | 347) | = | 11.90201725 | ||
| 4 | 86229 | 2493 | - | 2485 | = | 8 | * | (99 | / | 347) | = | 2.28242074 | ||
| 5 | 86232 | 2522 | - | 2528 | = | -6 | * | (76 | / | 347) | = | -1.31412103 | ||
| 6 | 86233 | 2572 | - | 2552 | = | 20 | * | (102 | / | 347) | = | 5.87896252 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Rio del Mar Elementary | 19 | ||||||||||||
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 | 86825 | 2480 | - | 2436 | = | 44 | * | (71 | / | 304) | = | 10.27631576 | ||
| 4 | 86826 | 2526 | - | 2485 | = | 41 | * | (69 | / | 304) | = | 9.30592104 | ||
| 5 | 86827 | 2513 | - | 2528 | = | -15 | * | (95 | / | 304) | = | -4.6875 | ||
| 6 | 86828 | 2574 | - | 2552 | = | 22 | * | (69 | / | 304) | = | 4.99342105 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Rio del Mar Elementary | 20 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 10 | 21 | 16 | 19 | 20 | 86.0 | 17.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 29.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 5.2
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 | 10% | 11% | 11% | 15% | 18% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Pajaro Valley Unified school district | County of Santa Cruz
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.
Rio del Mar Elementary math proficiency
Zero+ meets standard.
9% less $meal
10% less $meal
10% less $meal
14% less $meal
17% 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.