Whitney (Gretchen) High (Data source)
Source data for Whitney (Gretchen) High
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 |
||
| 7 | 604216 | 2676 | - | 2567 | = | 109 | * | (170 | / | 490) | = | 37.81632648 | ||
| 8 | 604219 | 2731 | - | 2586 | = | 145 | * | (162 | / | 490) | = | 47.93877538 | ||
| 11 | 604220 | 2783 | - | 2628 | = | 155 | * | (158 | / | 490) | = | 49.97959175 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Whitney (Gretchen) High | 136 | ||||||||||||
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 |
||
| 7 | 19372 | 2698 | - | 2567 | = | 131 | * | (167 | / | 493) | = | 44.37525348 | ||
| 8 | 19374 | 2720 | - | 2586 | = | 134 | * | (163 | / | 493) | = | 44.3042596 | ||
| 11 | 19377 | 2772 | - | 2628 | = | 144 | * | (163 | / | 493) | = | 47.61054763 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Whitney (Gretchen) High | 136 | ||||||||||||
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 |
||
| 7 | 19669 | 2702 | - | 2567 | = | 135 | * | (165 | / | 496) | = | 44.90927415 | ||
| 8 | 19671 | 2720 | - | 2586 | = | 134 | * | (166 | / | 496) | = | 44.84677415 | ||
| 11 | 19673 | 2761 | - | 2628 | = | 133 | * | (165 | / | 496) | = | 44.24395157 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Whitney (Gretchen) High | 134 | ||||||||||||
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 |
||
| 7 | 19665 | 2727 | - | 2567 | = | 160 | * | (164 | / | 492) | = | 53.33333328 | ||
| 8 | 19667 | 2742 | - | 2586 | = | 156 | * | (162 | / | 492) | = | 51.36585355 | ||
| 11 | 19669 | 2779 | - | 2628 | = | 151 | * | (166 | / | 492) | = | 50.94715432 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Whitney (Gretchen) High | 156 | ||||||||||||
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 |
||
| 7 | 19846 | 2721 | - | 2567 | = | 154 | * | (165 | / | 492) | = | 51.64634136 | ||
| 8 | 19847 | 2766 | - | 2586 | = | 180 | * | (163 | / | 492) | = | 59.63414634 | ||
| 11 | 19848 | 2785 | - | 2628 | = | 157 | * | (164 | / | 492) | = | 52.33333328 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Whitney (Gretchen) High | 164 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 136 | 136 | 134 | 156 | 164 | 726.0 | 145.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 184.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 106.2
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 | 19% | 21% | 20% | 24% | 25% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
ABC Unified school district | County of Los Angeles
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.
Whitney (Gretchen) High math proficiency
Zero+ meets standard.
12% less $meal
13% less $meal
11% less $meal
19% less $meal
20% 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.
High Schools (Public) schools in ABC Unified (4)
| Artesia High | Cerritos High | Gahr (Richard) High |
| Whitney (Gretchen) High |