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 |
95112 |
2493 |
- |
2436 |
= |
57 |
* |
(68 |
/ |
174)
|
= |
22.27586203 |
| 4 |
95113 |
2497 |
- |
2485 |
= |
12 |
* |
(49 |
/ |
174)
|
= |
3.37931034 |
| 5 |
95116 |
2580 |
- |
2528 |
= |
52 |
* |
(57 |
/ |
174)
|
= |
17.03448271 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Thornhill Elementary
|
43 |
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 |
2686 |
2475 |
- |
2436 |
= |
39 |
* |
(50 |
/ |
161)
|
= |
12.11180123 |
| 4 |
2688 |
2515 |
- |
2485 |
= |
30 |
* |
(62 |
/ |
161)
|
= |
11.55279501 |
| 5 |
2689 |
2555 |
- |
2528 |
= |
27 |
* |
(49 |
/ |
161)
|
= |
8.2173913 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Thornhill Elementary
|
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 |
| 3 |
2760 |
2499 |
- |
2436 |
= |
63 |
* |
(60 |
/ |
167)
|
= |
22.63473053 |
| 4 |
2762 |
2497 |
- |
2485 |
= |
12 |
* |
(50 |
/ |
167)
|
= |
3.59281436 |
| 5 |
2764 |
2573 |
- |
2528 |
= |
45 |
* |
(57 |
/ |
167)
|
= |
15.35928143 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Thornhill Elementary
|
42 |
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 |
2764 |
2491 |
- |
2436 |
= |
55 |
* |
(68 |
/ |
171)
|
= |
21.87134499 |
| 4 |
2766 |
2532 |
- |
2485 |
= |
47 |
* |
(58 |
/ |
171)
|
= |
15.94152044 |
| 5 |
2768 |
2543 |
- |
2528 |
= |
15 |
* |
(45 |
/ |
171)
|
= |
3.94736841 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Thornhill Elementary
|
42 |
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 |
2785 |
2484 |
- |
2436 |
= |
48 |
* |
(63 |
/ |
180)
|
= |
16.8 |
| 4 |
2786 |
2532 |
- |
2485 |
= |
47 |
* |
(66 |
/ |
180)
|
= |
17.2333333 |
| 5 |
2787 |
2573 |
- |
2528 |
= |
45 |
* |
(51 |
/ |
180)
|
= |
12.74999999 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Thornhill Elementary
|
47 |
Last steps
Compute the average
| 2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
|
43
|
32
|
42
|
42
|
47
|
206.0 |
41.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 56.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 26.2
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:
