Ruby Bridges Elementary (Data source)
Source data for Ruby Bridges Elementary
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 | 6946 | 2408 | - | 2436 | = | -28 | * | (83 | / | 291) | = | -7.98625428 | ||
| 4 | 6947 | 2460 | - | 2485 | = | -25 | * | (108 | / | 291) | = | -9.2783505 | ||
| 5 | 6950 | 2477 | - | 2528 | = | -51 | * | (100 | / | 291) | = | -17.52577316 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Ruby Bridges Elementary | -35 | ||||||||||||
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 | 208 | 2396 | - | 2436 | = | -40 | * | (106 | / | 289) | = | -14.67128024 | ||
| 4 | 209 | 2443 | - | 2485 | = | -42 | * | (81 | / | 289) | = | -11.77162627 | ||
| 5 | 211 | 2475 | - | 2528 | = | -53 | * | (102 | / | 289) | = | -18.70588233 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Ruby Bridges Elementary | -45 | ||||||||||||
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 | 209 | 2392 | - | 2436 | = | -44 | * | (79 | / | 244) | = | -14.2459016 | ||
| 4 | 212 | 2425 | - | 2485 | = | -60 | * | (99 | / | 244) | = | -24.34426224 | ||
| 5 | 214 | 2476 | - | 2528 | = | -52 | * | (66 | / | 244) | = | -14.06557376 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Ruby Bridges Elementary | -53 | ||||||||||||
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 | 229 | 2397 | - | 2436 | = | -39 | * | (64 | / | 236) | = | -10.57627116 | ||
| 4 | 231 | 2430 | - | 2485 | = | -55 | * | (79 | / | 236) | = | -18.41101691 | ||
| 5 | 233 | 2470 | - | 2528 | = | -58 | * | (93 | / | 236) | = | -22.85593217 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Ruby Bridges Elementary | -52 | ||||||||||||
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 | 257 | 2420 | - | 2436 | = | -16 | * | (72 | / | 212) | = | -5.43396226 | ||
| 4 | 258 | 2429 | - | 2485 | = | -56 | * | (60 | / | 212) | = | -15.84905655 | ||
| 5 | 259 | 2458 | - | 2528 | = | -70 | * | (80 | / | 212) | = | -26.4150943 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Ruby Bridges Elementary | -48 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -35 | -45 | -53 | -52 | -48 | -233.0 | -46.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -25.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -67.6
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 | 68% | 63% | 65% | 67% | 63% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Alameda 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.
Ruby Bridges Elementary math proficiency
Zero+ meets standard.
55% less $meal
55% less $meal
55% less $meal
60% less $meal
58% 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.
Elementary School (Public) schools in Alameda Unified (9)
| Amelia Earhart Elementary | Bay Farm | Edison Elementary |
| Frank Otis Elementary | Franklin Elementary | Love Elementary |
| Maya Lin | Ruby Bridges Elementary | William G. Paden Elementary |