Wells (Ida B.) High (Data source)
Source data for Wells (Ida B.) 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 |
||
| 11 | 2355828 | 0 | - | 2628 | = | * | (9 | / | 9) | = | ||||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Wells (Ida B.) High | |||||||||||||
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 |
||
| 11 | 71994 | 2422 | - | 2628 | = | -206 | * | (20 | / | 20) | = | -206.0 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Wells (Ida B.) High | -206 | ||||||||||||
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 |
||
| 11 | 73972 | 2424 | - | 2628 | = | -204 | * | (12 | / | 12) | = | -204.0 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Wells (Ida B.) High | -204 | ||||||||||||
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 |
||
| 11 | 74146 | 2471 | - | 2628 | = | -157 | * | (14 | / | 14) | = | -157.0 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Wells (Ida B.) High | -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 |
||
| 11 | 74669 | 2423 | - | 2628 | = | -205 | * | (26 | / | 26) | = | -205.0 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Wells (Ida B.) High | -205 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -206 | -204 | -157 | -205 | -772.0 | -154.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -121.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -265.0
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 | 79% | 74% | 81% | 68% | 65% |
| Data source | 2015 data file | 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.
Wells (Ida B.) High math proficiency
Zero+ meets standard.
69% less $meal
72% less $meal
73% less $meal
65% 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.
Continuation High Schools schools in San Francisco Unified (2)
| Downtown High | Wells (Ida B.) High |