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 |
2365071 |
2473 |
- |
2436 |
= |
37 |
* |
(64 |
/ |
181)
|
= |
13.08287292 |
| 4 |
2365072 |
2489 |
- |
2485 |
= |
4 |
* |
(58 |
/ |
181)
|
= |
1.28176795 |
| 5 |
2365075 |
2549 |
- |
2528 |
= |
21 |
* |
(59 |
/ |
181)
|
= |
6.84530385 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Grattan Elementary
|
21 |
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 |
72255 |
2453 |
- |
2436 |
= |
17 |
* |
(61 |
/ |
183)
|
= |
5.66666666 |
| 4 |
72257 |
2498 |
- |
2485 |
= |
13 |
* |
(62 |
/ |
183)
|
= |
4.40437158 |
| 5 |
72260 |
2523 |
- |
2528 |
= |
-5 |
* |
(60 |
/ |
183)
|
= |
-1.63934426 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Grattan Elementary
|
8 |
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 |
74229 |
2478 |
- |
2436 |
= |
42 |
* |
(63 |
/ |
183)
|
= |
14.45901639 |
| 4 |
74232 |
2503 |
- |
2485 |
= |
18 |
* |
(57 |
/ |
183)
|
= |
5.60655736 |
| 5 |
74234 |
2525 |
- |
2528 |
= |
-3 |
* |
(63 |
/ |
183)
|
= |
-1.03278689 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Grattan Elementary
|
19 |
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 |
74403 |
2486 |
- |
2436 |
= |
50 |
* |
(61 |
/ |
185)
|
= |
16.48648645 |
| 4 |
74406 |
2517 |
- |
2485 |
= |
32 |
* |
(62 |
/ |
185)
|
= |
10.72432432 |
| 5 |
74407 |
2534 |
- |
2528 |
= |
6 |
* |
(62 |
/ |
185)
|
= |
2.01081081 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Grattan Elementary
|
29 |
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 |
74927 |
2445 |
- |
2436 |
= |
9 |
* |
(63 |
/ |
182)
|
= |
3.11538461 |
| 4 |
74928 |
2548 |
- |
2485 |
= |
63 |
* |
(60 |
/ |
182)
|
= |
20.76923073 |
| 5 |
74929 |
2553 |
- |
2528 |
= |
25 |
* |
(59 |
/ |
182)
|
= |
8.1043956 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Grattan Elementary
|
32 |
Last steps
Compute the average
| 2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
|
21
|
8
|
19
|
29
|
32
|
109.0 |
21.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 48.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -5.2
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:
