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 |
2367782 |
2487 |
- |
2436 |
= |
51 |
* |
(86 |
/ |
278)
|
= |
15.77697837 |
| 4 |
2367783 |
2507 |
- |
2485 |
= |
22 |
* |
(97 |
/ |
278)
|
= |
7.67625899 |
| 5 |
2367786 |
2565 |
- |
2528 |
= |
37 |
* |
(95 |
/ |
278)
|
= |
12.64388487 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Lafayette Elementary
|
36 |
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 |
72335 |
2495 |
- |
2436 |
= |
59 |
* |
(87 |
/ |
283)
|
= |
18.13780915 |
| 4 |
72337 |
2544 |
- |
2485 |
= |
59 |
* |
(98 |
/ |
283)
|
= |
20.43109537 |
| 5 |
72339 |
2579 |
- |
2528 |
= |
51 |
* |
(98 |
/ |
283)
|
= |
17.66077735 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Lafayette Elementary
|
56 |
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 |
74310 |
2490 |
- |
2436 |
= |
54 |
* |
(89 |
/ |
280)
|
= |
17.16428567 |
| 4 |
74311 |
2516 |
- |
2485 |
= |
31 |
* |
(91 |
/ |
280)
|
= |
10.075 |
| 5 |
74313 |
2576 |
- |
2528 |
= |
48 |
* |
(100 |
/ |
280)
|
= |
17.14285714 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Lafayette Elementary
|
44 |
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 |
74484 |
2471 |
- |
2436 |
= |
35 |
* |
(86 |
/ |
276)
|
= |
10.90579707 |
| 4 |
74485 |
2534 |
- |
2485 |
= |
49 |
* |
(96 |
/ |
276)
|
= |
17.04347821 |
| 5 |
74488 |
2572 |
- |
2528 |
= |
44 |
* |
(94 |
/ |
276)
|
= |
14.98550724 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Lafayette Elementary
|
43 |
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 |
75007 |
2484 |
- |
2436 |
= |
48 |
* |
(85 |
/ |
272)
|
= |
15.0 |
| 4 |
75008 |
2521 |
- |
2485 |
= |
36 |
* |
(96 |
/ |
272)
|
= |
12.70588234 |
| 5 |
75009 |
2565 |
- |
2528 |
= |
37 |
* |
(91 |
/ |
272)
|
= |
12.37867645 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Lafayette Elementary
|
40 |
Last steps
Compute the average
| 2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
|
36
|
56
|
44
|
43
|
40
|
219.0 |
43.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 64.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 22.8
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:
