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 |
2252837 |
2401 |
- |
2436 |
= |
-35 |
* |
(64 |
/ |
187)
|
= |
-11.97860962 |
| 4 |
2252840 |
2402 |
- |
2485 |
= |
-83 |
* |
(58 |
/ |
187)
|
= |
-25.74331544 |
| 5 |
2252841 |
2460 |
- |
2528 |
= |
-68 |
* |
(65 |
/ |
187)
|
= |
-23.63636358 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Johnson Elementary
|
-61 |
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 |
69137 |
2395 |
- |
2436 |
= |
-41 |
* |
(70 |
/ |
184)
|
= |
-15.59782606 |
| 4 |
69140 |
2427 |
- |
2485 |
= |
-58 |
* |
(64 |
/ |
184)
|
= |
-20.17391299 |
| 5 |
69142 |
2465 |
- |
2528 |
= |
-63 |
* |
(50 |
/ |
184)
|
= |
-17.11956519 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Johnson Elementary
|
-53 |
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 |
70970 |
2426 |
- |
2436 |
= |
-10 |
* |
(54 |
/ |
170)
|
= |
-3.17647058 |
| 4 |
70972 |
2429 |
- |
2485 |
= |
-56 |
* |
(58 |
/ |
170)
|
= |
-19.10588232 |
| 5 |
70974 |
2482 |
- |
2528 |
= |
-46 |
* |
(58 |
/ |
170)
|
= |
-15.69411762 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Johnson Elementary
|
-38 |
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 |
71115 |
2397 |
- |
2436 |
= |
-39 |
* |
(49 |
/ |
155)
|
= |
-12.32903225 |
| 4 |
71117 |
2436 |
- |
2485 |
= |
-49 |
* |
(51 |
/ |
155)
|
= |
-16.12258064 |
| 5 |
71119 |
2484 |
- |
2528 |
= |
-44 |
* |
(55 |
/ |
155)
|
= |
-15.6129032 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Johnson Elementary
|
-44 |
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 |
71603 |
2396 |
- |
2436 |
= |
-40 |
* |
(45 |
/ |
130)
|
= |
-13.84615384 |
| 4 |
71604 |
2431 |
- |
2485 |
= |
-54 |
* |
(44 |
/ |
130)
|
= |
-18.27692305 |
| 5 |
71605 |
2494 |
- |
2528 |
= |
-34 |
* |
(41 |
/ |
130)
|
= |
-10.72307691 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Johnson Elementary
|
-43 |
Last steps
Compute the average
| 2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
|
-61
|
-53
|
-38
|
-44
|
-43
|
-239.0 |
-47.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -20.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -74.8
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:
