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 |
206814 |
2428 |
- |
2436 |
= |
-8 |
* |
(74 |
/ |
212)
|
= |
-2.79245282 |
| 4 |
206815 |
2470 |
- |
2485 |
= |
-15 |
* |
(70 |
/ |
212)
|
= |
-4.95283019 |
| 5 |
206818 |
2501 |
- |
2528 |
= |
-27 |
* |
(68 |
/ |
212)
|
= |
-8.66037733 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Ayers Elementary
|
-16 |
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 |
6141 |
2451 |
- |
2436 |
= |
15 |
* |
(72 |
/ |
220)
|
= |
4.90909091 |
| 4 |
6144 |
2452 |
- |
2485 |
= |
-33 |
* |
(72 |
/ |
220)
|
= |
-10.79999999 |
| 5 |
6146 |
2481 |
- |
2528 |
= |
-47 |
* |
(76 |
/ |
220)
|
= |
-16.23636362 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Ayers Elementary
|
-22 |
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 |
6318 |
2444 |
- |
2436 |
= |
8 |
* |
(66 |
/ |
213)
|
= |
2.47887323 |
| 4 |
6320 |
2461 |
- |
2485 |
= |
-24 |
* |
(74 |
/ |
213)
|
= |
-8.33802816 |
| 5 |
6321 |
2475 |
- |
2528 |
= |
-53 |
* |
(73 |
/ |
213)
|
= |
-18.16431921 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Ayers Elementary
|
-24 |
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 |
6313 |
2420 |
- |
2436 |
= |
-16 |
* |
(71 |
/ |
206)
|
= |
-5.5145631 |
| 4 |
6316 |
2455 |
- |
2485 |
= |
-30 |
* |
(62 |
/ |
206)
|
= |
-9.02912619 |
| 5 |
6317 |
2474 |
- |
2528 |
= |
-54 |
* |
(73 |
/ |
206)
|
= |
-19.13592233 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Ayers Elementary
|
-34 |
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 |
6373 |
2431 |
- |
2436 |
= |
-5 |
* |
(75 |
/ |
213)
|
= |
-1.76056338 |
| 4 |
6374 |
2458 |
- |
2485 |
= |
-27 |
* |
(74 |
/ |
213)
|
= |
-9.38028168 |
| 5 |
6375 |
2497 |
- |
2528 |
= |
-31 |
* |
(64 |
/ |
213)
|
= |
-9.31455397 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Ayers Elementary
|
-20 |
Last steps
Compute the average
| 2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
|
-16
|
-22
|
-24
|
-34
|
-20
|
-116.0 |
-23.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -5.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -41.2
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:
