Grapevine Elementary (Data source)
Source data for Grapevine 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 | 2317068 | 2400 | - | 2436 | = | -36 | * | (92 | / | 272) | = | -12.17647058 | ||
| 4 | 2317069 | 2441 | - | 2485 | = | -44 | * | (87 | / | 272) | = | -14.0735294 | ||
| 5 | 2317072 | 2431 | - | 2528 | = | -97 | * | (93 | / | 272) | = | -33.16544111 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Grapevine Elementary | -59 | ||||||||||||
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 | 70917 | 2405 | - | 2436 | = | -31 | * | (109 | / | 290) | = | -11.65172411 | ||
| 4 | 70919 | 2445 | - | 2485 | = | -40 | * | (92 | / | 290) | = | -12.68965516 | ||
| 5 | 70921 | 2450 | - | 2528 | = | -78 | * | (89 | / | 290) | = | -23.93793098 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Grapevine Elementary | -48 | ||||||||||||
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 | 72776 | 2422 | - | 2436 | = | -14 | * | (117 | / | 310) | = | -5.28387096 | ||
| 4 | 72778 | 2441 | - | 2485 | = | -44 | * | (105 | / | 310) | = | -14.90322579 | ||
| 5 | 72781 | 2463 | - | 2528 | = | -65 | * | (88 | / | 310) | = | -18.45161286 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Grapevine Elementary | -39 | ||||||||||||
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 | 72905 | 2419 | - | 2436 | = | -17 | * | (107 | / | 316) | = | -5.7563291 | ||
| 4 | 72908 | 2452 | - | 2485 | = | -33 | * | (108 | / | 316) | = | -11.27848098 | ||
| 5 | 72909 | 2463 | - | 2528 | = | -65 | * | (101 | / | 316) | = | -20.77531645 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Grapevine Elementary | -38 | ||||||||||||
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 | 73373 | 2388 | - | 2436 | = | -48 | * | (121 | / | 363) | = | -15.99999998 | ||
| 4 | 73374 | 2460 | - | 2485 | = | -25 | * | (118 | / | 363) | = | -8.12672175 | ||
| 5 | 73375 | 2463 | - | 2528 | = | -65 | * | (124 | / | 363) | = | -22.20385674 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Grapevine Elementary | -46 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -59 | -48 | -39 | -38 | -46 | -230.0 | -46.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -22.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -70.0
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 | 90% | 86% | 89% | 86% | 91% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Vista 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.
Grapevine Elementary math proficiency
Zero+ meets standard.
77% less $meal
77% less $meal
77% less $meal
78% less $meal
81% 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.