Bixby Elementary (Data source)
Source data for Bixby 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 | 1172719 | 2416 | - | 2436 | = | -20 | * | (46 | / | 141) | = | -6.52482268 | ||
| 4 | 1172720 | 2441 | - | 2485 | = | -44 | * | (41 | / | 141) | = | -12.7943262 | ||
| 5 | 1172723 | 2460 | - | 2528 | = | -68 | * | (54 | / | 141) | = | -26.04255316 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Bixby Elementary | -45 | ||||||||||||
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 | 36518 | 2425 | - | 2436 | = | -11 | * | (42 | / | 140) | = | -3.3 | ||
| 4 | 36520 | 2464 | - | 2485 | = | -21 | * | (53 | / | 140) | = | -7.94999999 | ||
| 5 | 36522 | 2472 | - | 2528 | = | -56 | * | (45 | / | 140) | = | -17.99999998 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Bixby Elementary | -29 | ||||||||||||
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 | 37284 | 2428 | - | 2436 | = | -8 | * | (47 | / | 138) | = | -2.72463768 | ||
| 4 | 37286 | 2508 | - | 2485 | = | 23 | * | (37 | / | 138) | = | 6.16666667 | ||
| 5 | 37288 | 2495 | - | 2528 | = | -33 | * | (54 | / | 138) | = | -12.91304345 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Bixby Elementary | -9 | ||||||||||||
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 | 37237 | 2442 | - | 2436 | = | 6 | * | (36 | / | 128) | = | 1.6875 | ||
| 4 | 37238 | 2463 | - | 2485 | = | -22 | * | (50 | / | 128) | = | -8.59375 | ||
| 5 | 37241 | 2490 | - | 2528 | = | -38 | * | (42 | / | 128) | = | -12.46875 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Bixby Elementary | -19 | ||||||||||||
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 | 37440 | 2448 | - | 2436 | = | 12 | * | (42 | / | 131) | = | 3.84732824 | ||
| 4 | 37441 | 2474 | - | 2485 | = | -11 | * | (38 | / | 131) | = | -3.19083969 | ||
| 5 | 37442 | 2504 | - | 2528 | = | -24 | * | (51 | / | 131) | = | -9.34351145 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Bixby Elementary | -9 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -45 | -29 | -9 | -19 | -9 | -111.0 | -22.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 22.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -67.2
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 | 85% | 81% | 78% | 76% | 78% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Hacienda la Puente 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.
Bixby Elementary math proficiency
Zero+ meets standard.
67% less $meal
66% less $meal
64% less $meal
65% less $meal
64% 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.