Brown Jr. (Willie L) Middle (Data source)
Source data for Brown Jr. (Willie L) Middle
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 | 71989 | 2440 | - | 2552 | = | -112 | * | (183 | / | 183) | = | -112.0 | ||
Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Brown Jr. (Willie L) Middle | -112 |
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 | 73965 | 2420 | - | 2552 | = | -132 | * | (71 | / | 230) | = | -40.74782606 | ||
7 | 73967 | 2439 | - | 2567 | = | -128 | * | (159 | / | 230) | = | -88.48695642 | ||
Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Brown Jr. (Willie L) Middle | -129 |
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 | 74138 | 2405 | - | 2552 | = | -147 | * | (80 | / | 314) | = | -37.45222929 | ||
7 | 74139 | 2443 | - | 2567 | = | -124 | * | (69 | / | 314) | = | -27.24840753 | ||
8 | 74142 | 2439 | - | 2586 | = | -147 | * | (165 | / | 314) | = | -77.24522293 | ||
Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Brown Jr. (Willie L) Middle | -142 |
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 | 74663 | 2389 | - | 2552 | = | -163 | * | (70 | / | 205) | = | -55.65853648 | ||
7 | 74664 | 2438 | - | 2567 | = | -129 | * | (68 | / | 205) | = | -42.79024389 | ||
8 | 74665 | 2453 | - | 2586 | = | -133 | * | (67 | / | 205) | = | -43.46829264 | ||
Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Brown Jr. (Willie L) Middle | -142 |
Last steps
Compute the average
2016 | 2017 | 2018 | 2019 | Sum | Average |
---|---|---|---|---|---|
-112 | -129 | -142 | -142 | -525.0 | -131.3 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -89.25
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -173.25
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:
2016 | 2017 | 2018 | 2019 | |
---|---|---|---|---|
Percent | 77% | 71% | 75% | 79% |
Data source | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
San Francisco Unified school district | County of San Francisco
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.
Brown Jr. (Willie L) Middle math proficiency
Zero+ meets standard.
70% less $meal
66% less $meal
71% less $meal
73% 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.