Bellflower High (Data source)
Source data for Bellflower 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 |
||
| 7 | 634592 | 2488 | - | 2567 | = | -79 | * | (457 | / | 1271) | = | -28.40519276 | ||
| 8 | 634595 | 2505 | - | 2586 | = | -81 | * | (445 | / | 1271) | = | -28.35955938 | ||
| 11 | 634596 | 2568 | - | 2628 | = | -60 | * | (369 | / | 1271) | = | -17.4193548 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Bellflower High | -74 | ||||||||||||
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 |
||
| 7 | 20267 | 2488 | - | 2567 | = | -79 | * | (409 | / | 1208) | = | -26.74751648 | ||
| 8 | 20270 | 2518 | - | 2586 | = | -68 | * | (431 | / | 1208) | = | -24.26158937 | ||
| 11 | 20272 | 2563 | - | 2628 | = | -65 | * | (368 | / | 1208) | = | -19.80132447 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Bellflower High | -71 | ||||||||||||
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 |
||
| 7 | 20586 | 2490 | - | 2567 | = | -77 | * | (424 | / | 1230) | = | -26.54308942 | ||
| 8 | 20588 | 2524 | - | 2586 | = | -62 | * | (427 | / | 1230) | = | -21.5235772 | ||
| 11 | 20590 | 2541 | - | 2628 | = | -87 | * | (379 | / | 1230) | = | -26.80731705 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Bellflower High | -75 | ||||||||||||
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 |
||
| 7 | 20577 | 2488 | - | 2567 | = | -79 | * | (391 | / | 1178) | = | -26.2215619 | ||
| 8 | 20579 | 2506 | - | 2586 | = | -80 | * | (415 | / | 1178) | = | -28.1833616 | ||
| 11 | 20581 | 2549 | - | 2628 | = | -79 | * | (372 | / | 1178) | = | -24.94736837 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Bellflower High | -79 | ||||||||||||
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 |
||
| 7 | 20754 | 2485 | - | 2567 | = | -82 | * | (423 | / | 1162) | = | -29.85025812 | ||
| 8 | 20755 | 2505 | - | 2586 | = | -81 | * | (383 | / | 1162) | = | -26.69793453 | ||
| 11 | 20756 | 2568 | - | 2628 | = | -60 | * | (356 | / | 1162) | = | -18.3820998 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Bellflower High | -75 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -74 | -71 | -75 | -79 | -75 | -374.0 | -74.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -68.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -80.8
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 | 83% | 79% | 75% | 73% | 79% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Bellflower 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.
Bellflower High math proficiency
Zero+ meets standard.
64% less $meal
60% less $meal
56% less $meal
62% less $meal
67% 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.
High Schools (Public) schools in Bellflower Unified (2)
| Bellflower High | Mayfair High |