Andrew N. Christensen Middle (Data source)
Source data for Andrew N. Christensen Middle
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 |
||
| 6 | 59529 | 2520 | - | 2552 | = | -32 | * | (213 | / | 644) | = | -10.58385091 | ||
| 7 | 59532 | 2529 | - | 2567 | = | -38 | * | (216 | / | 644) | = | -12.74534159 | ||
| 8 | 59533 | 2558 | - | 2586 | = | -28 | * | (215 | / | 644) | = | -9.34782607 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Andrew N. Christensen Middle | -33 | ||||||||||||
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 |
||
| 6 | 1580 | 2527 | - | 2552 | = | -25 | * | (177 | / | 604) | = | -7.32615893 | ||
| 7 | 1582 | 2533 | - | 2567 | = | -34 | * | (209 | / | 604) | = | -11.76490066 | ||
| 8 | 1583 | 2551 | - | 2586 | = | -35 | * | (218 | / | 604) | = | -12.63245032 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Andrew N. Christensen Middle | -32 | ||||||||||||
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 |
||
| 6 | 1627 | 2530 | - | 2552 | = | -22 | * | (211 | / | 669) | = | -6.93871449 | ||
| 7 | 1629 | 2553 | - | 2567 | = | -14 | * | (217 | / | 669) | = | -4.54110612 | ||
| 8 | 1631 | 2540 | - | 2586 | = | -46 | * | (241 | / | 669) | = | -16.57100145 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Andrew N. Christensen Middle | -28 | ||||||||||||
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 |
||
| 6 | 1644 | 2538 | - | 2552 | = | -14 | * | (256 | / | 700) | = | -5.11999999 | ||
| 7 | 1645 | 2558 | - | 2567 | = | -9 | * | (226 | / | 700) | = | -2.90571428 | ||
| 8 | 1648 | 2582 | - | 2586 | = | -4 | * | (218 | / | 700) | = | -1.24571428 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Andrew N. Christensen Middle | -9 | ||||||||||||
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 |
||
| 6 | 1669 | 2543 | - | 2552 | = | -9 | * | (235 | / | 700) | = | -3.02142857 | ||
| 7 | 1670 | 2572 | - | 2567 | = | 5 | * | (246 | / | 700) | = | 1.75714286 | ||
| 8 | 1671 | 2578 | - | 2586 | = | -8 | * | (219 | / | 700) | = | -2.50285714 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Andrew N. Christensen Middle | -4 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -33 | -32 | -28 | -9 | -4 | -106.0 | -21.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 17.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -60.2
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 | 21% | 20% | 17% | 21% | 19% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Livermore Valley Joint 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.
Andrew N. Christensen Middle math proficiency
Zero+ meets standard.
16% less $meal
15% less $meal
14% less $meal
17% less $meal
17% 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.
Intermediate/Middle Schools (Public) schools in Livermore Valley Joint Unified (3)
| Andrew N. Christensen Middle | East Avenue Middle | William Mendenhall Middle |