Westlake Middle (Data source)
Source data for Westlake Middle
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 |
||
| 6 | 97688 | 2427 | - | 2552 | = | -125 | * | (141 | / | 509) | = | -34.626719 | ||
| 7 | 97689 | 2451 | - | 2567 | = | -116 | * | (174 | / | 509) | = | -39.65422393 | ||
| 8 | 97692 | 2459 | - | 2586 | = | -127 | * | (194 | / | 509) | = | -48.4047151 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Westlake Middle | -123 | ||||||||||||
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 |
||
| 6 | 2758 | 2423 | - | 2552 | = | -129 | * | (129 | / | 443) | = | -37.56433405 | ||
| 7 | 2760 | 2433 | - | 2567 | = | -134 | * | (152 | / | 443) | = | -45.97742662 | ||
| 8 | 2762 | 2452 | - | 2586 | = | -134 | * | (162 | / | 443) | = | -49.00225726 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Westlake Middle | -133 | ||||||||||||
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 |
||
| 6 | 2832 | 2392 | - | 2552 | = | -160 | * | (91 | / | 374) | = | -38.93048128 | ||
| 7 | 2833 | 2421 | - | 2567 | = | -146 | * | (134 | / | 374) | = | -52.31016042 | ||
| 8 | 2835 | 2423 | - | 2586 | = | -163 | * | (149 | / | 374) | = | -64.93850252 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Westlake Middle | -156 | ||||||||||||
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 |
||
| 6 | 2836 | 2396 | - | 2552 | = | -156 | * | (104 | / | 345) | = | -47.0260869 | ||
| 7 | 2837 | 2417 | - | 2567 | = | -150 | * | (103 | / | 345) | = | -44.7826086 | ||
| 8 | 2840 | 2424 | - | 2586 | = | -162 | * | (138 | / | 345) | = | -64.8 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Westlake Middle | -157 | ||||||||||||
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 |
||
| 6 | 2857 | 2379 | - | 2552 | = | -173 | * | (91 | / | 318) | = | -49.50628931 | ||
| 7 | 2858 | 2396 | - | 2567 | = | -171 | * | (115 | / | 318) | = | -61.83962262 | ||
| 8 | 2859 | 2415 | - | 2586 | = | -171 | * | (112 | / | 318) | = | -60.22641495 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Westlake Middle | -172 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -123 | -133 | -156 | -157 | -172 | -741.0 | -148.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -91.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -205.2
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 | 85% | 93% | 86% | 85% | 85% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Oakland 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.
Westlake Middle math proficiency
Zero+ meets standard.
78% less $meal
87% less $meal
79% less $meal
80% less $meal
78% 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.