Vista Verde (Data source)
Source data for Vista Verde
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 | 1577986 | 2487 | - | 2436 | = | 51 | * | (119 | / | 624) | = | 9.72596153 | ||
| 4 | 1577987 | 2545 | - | 2485 | = | 60 | * | (103 | / | 624) | = | 9.90384612 | ||
| 5 | 1577990 | 2571 | - | 2528 | = | 43 | * | (122 | / | 624) | = | 8.40705126 | ||
| 6 | 1577991 | 2608 | - | 2552 | = | 56 | * | (103 | / | 624) | = | 9.24358971 | ||
| 7 | 1577994 | 2646 | - | 2567 | = | 79 | * | (102 | / | 624) | = | 12.9134615 | ||
| 8 | 1577995 | 2686 | - | 2586 | = | 100 | * | (75 | / | 624) | = | 12.0192307 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Vista Verde | 62 | ||||||||||||
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 | 49377 | 2496 | - | 2436 | = | 60 | * | (118 | / | 641) | = | 11.04524178 | ||
| 4 | 49379 | 2548 | - | 2485 | = | 63 | * | (119 | / | 641) | = | 11.69578778 | ||
| 5 | 49381 | 2577 | - | 2528 | = | 49 | * | (100 | / | 641) | = | 7.64430576 | ||
| 6 | 49383 | 2616 | - | 2552 | = | 64 | * | (121 | / | 641) | = | 12.0811232 | ||
| 7 | 49385 | 2644 | - | 2567 | = | 77 | * | (92 | / | 641) | = | 11.05148206 | ||
| 8 | 49387 | 2698 | - | 2586 | = | 112 | * | (91 | / | 641) | = | 15.90015594 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Vista Verde | 69 | ||||||||||||
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 | 50740 | 2497 | - | 2436 | = | 61 | * | (118 | / | 634) | = | 11.35331225 | ||
| 4 | 50742 | 2524 | - | 2485 | = | 39 | * | (114 | / | 634) | = | 7.01261828 | ||
| 5 | 50744 | 2572 | - | 2528 | = | 44 | * | (122 | / | 634) | = | 8.46687697 | ||
| 6 | 50747 | 2618 | - | 2552 | = | 66 | * | (92 | / | 634) | = | 9.57728706 | ||
| 7 | 50748 | 2652 | - | 2567 | = | 85 | * | (102 | / | 634) | = | 13.6750788 | ||
| 8 | 50750 | 2700 | - | 2586 | = | 114 | * | (86 | / | 634) | = | 15.46372232 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Vista Verde | 66 | ||||||||||||
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 | 50776 | 2502 | - | 2436 | = | 66 | * | (115 | / | 648) | = | 11.71296291 | ||
| 4 | 50779 | 2542 | - | 2485 | = | 57 | * | (115 | / | 648) | = | 10.1157407 | ||
| 5 | 50780 | 2556 | - | 2528 | = | 28 | * | (111 | / | 648) | = | 4.79629629 | ||
| 6 | 50783 | 2628 | - | 2552 | = | 76 | * | (121 | / | 648) | = | 14.19135802 | ||
| 7 | 50784 | 2655 | - | 2567 | = | 88 | * | (89 | / | 648) | = | 12.08641975 | ||
| 8 | 50787 | 2715 | - | 2586 | = | 129 | * | (97 | / | 648) | = | 19.31018518 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Vista Verde | 72 | ||||||||||||
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 | 50986 | 2513 | - | 2436 | = | 77 | * | (90 | / | 630) | = | 10.99999993 | ||
| 4 | 50987 | 2560 | - | 2485 | = | 75 | * | (118 | / | 630) | = | 14.04761903 | ||
| 5 | 50988 | 2562 | - | 2528 | = | 34 | * | (122 | / | 630) | = | 6.58412696 | ||
| 6 | 50989 | 2613 | - | 2552 | = | 61 | * | (104 | / | 630) | = | 10.06984127 | ||
| 7 | 50990 | 2653 | - | 2567 | = | 86 | * | (113 | / | 630) | = | 15.42539679 | ||
| 8 | 50991 | 2742 | - | 2586 | = | 156 | * | (83 | / | 630) | = | 20.55238084 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Vista Verde | 78 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 62 | 69 | 66 | 72 | 78 | 347.0 | 69.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 87.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 51.4
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 | 3% | 4% | 4% | 7% | 7% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Irvine Unified school district | County of Orange
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.
Vista Verde math proficiency
Zero+ meets standard.
2% less $meal
3% less $meal
3% less $meal
7% less $meal
6% 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.