Washington Elementary (Data source)
Source data for Washington 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 | 1164955 | 2394 | - | 2436 | = | -42 | * | (65 | / | 202) | = | -13.51485148 | ||
| 4 | 1164956 | 2422 | - | 2485 | = | -63 | * | (66 | / | 202) | = | -20.5841584 | ||
| 5 | 1164959 | 2418 | - | 2528 | = | -110 | * | (71 | / | 202) | = | -38.66336628 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Washington Elementary | -73 | ||||||||||||
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 | 36270 | 2379 | - | 2436 | = | -57 | * | (52 | / | 207) | = | -14.31884055 | ||
| 4 | 36272 | 2433 | - | 2485 | = | -52 | * | (63 | / | 207) | = | -15.82608695 | ||
| 5 | 36273 | 2439 | - | 2528 | = | -89 | * | (58 | / | 207) | = | -24.937198 | ||
| 6 | 36275 | 2480 | - | 2552 | = | -72 | * | (34 | / | 207) | = | -11.8260869 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Washington Elementary | -67 | ||||||||||||
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 | 37029 | 2403 | - | 2436 | = | -33 | * | (51 | / | 187) | = | -8.99999998 | ||
| 4 | 37031 | 2427 | - | 2485 | = | -58 | * | (48 | / | 187) | = | -14.88770048 | ||
| 5 | 37034 | 2414 | - | 2528 | = | -114 | * | (64 | / | 187) | = | -39.01604275 | ||
| 6 | 37036 | 2491 | - | 2552 | = | -61 | * | (24 | / | 187) | = | -7.82887695 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Washington Elementary | -71 | ||||||||||||
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 | 36999 | 2362 | - | 2436 | = | -74 | * | (50 | / | 184) | = | -20.10869562 | ||
| 4 | 37002 | 2428 | - | 2485 | = | -57 | * | (51 | / | 184) | = | -15.79891304 | ||
| 5 | 37003 | 2439 | - | 2528 | = | -89 | * | (49 | / | 184) | = | -23.70108688 | ||
| 6 | 37006 | 2451 | - | 2552 | = | -101 | * | (34 | / | 184) | = | -18.66304341 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Washington Elementary | -78 | ||||||||||||
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 | 37199 | 2400 | - | 2436 | = | -36 | * | (42 | / | 159) | = | -9.50943395 | ||
| 4 | 37200 | 2424 | - | 2485 | = | -61 | * | (46 | / | 159) | = | -17.64779874 | ||
| 5 | 37201 | 2476 | - | 2528 | = | -52 | * | (43 | / | 159) | = | -14.06289305 | ||
| 6 | 37202 | 2468 | - | 2552 | = | -84 | * | (21 | / | 159) | = | -11.09433956 | ||
| 7 | 37203 | 0 | - | 2567 | = | * | (0 | / | 159) | = | ||||
| 8 | 37204 | 0 | - | 2586 | = | * | (5 | / | 159) | = | ||||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Washington Elementary | -52 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -73 | -67 | -71 | -78 | -52 | -341.0 | -68.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -41.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -95.2
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 | 58% | 85% | 78% | 84% | 77% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Compton 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.
Washington Elementary math proficiency
Zero+ meets standard.
54% less $meal
78% less $meal
73% less $meal
81% less $meal
74% 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.