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 |
2247687 |
2425 |
- |
2436 |
= |
-11 |
* |
(36 |
/ |
113)
|
= |
-3.50442477 |
| 4 |
2247690 |
2468 |
- |
2485 |
= |
-17 |
* |
(33 |
/ |
113)
|
= |
-4.96460177 |
| 5 |
2247691 |
2498 |
- |
2528 |
= |
-30 |
* |
(44 |
/ |
113)
|
= |
-11.6814159 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Florence Elementary
|
-20 |
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 |
68990 |
2419 |
- |
2436 |
= |
-17 |
* |
(38 |
/ |
105)
|
= |
-6.15238094 |
| 4 |
68991 |
2452 |
- |
2485 |
= |
-33 |
* |
(37 |
/ |
105)
|
= |
-11.62857142 |
| 5 |
68994 |
2550 |
- |
2528 |
= |
22 |
* |
(30 |
/ |
105)
|
= |
6.28571427 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Florence Elementary
|
-11 |
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 |
70822 |
2438 |
- |
2436 |
= |
2 |
* |
(34 |
/ |
99)
|
= |
0.68686869 |
| 4 |
70824 |
2462 |
- |
2485 |
= |
-23 |
* |
(33 |
/ |
99)
|
= |
-7.66666666 |
| 5 |
70827 |
2539 |
- |
2528 |
= |
11 |
* |
(32 |
/ |
99)
|
= |
3.55555555 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Florence Elementary
|
-3 |
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 |
70968 |
2468 |
- |
2436 |
= |
32 |
* |
(24 |
/ |
86)
|
= |
8.93023254 |
| 4 |
70969 |
2477 |
- |
2485 |
= |
-8 |
* |
(33 |
/ |
86)
|
= |
-3.06976744 |
| 5 |
70972 |
2540 |
- |
2528 |
= |
12 |
* |
(29 |
/ |
86)
|
= |
4.04651162 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Florence Elementary
|
10 |
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 |
71455 |
2429 |
- |
2436 |
= |
-7 |
* |
(36 |
/ |
88)
|
= |
-2.86363636 |
| 4 |
71456 |
2522 |
- |
2485 |
= |
37 |
* |
(23 |
/ |
88)
|
= |
9.67045453 |
| 5 |
71457 |
2533 |
- |
2528 |
= |
5 |
* |
(29 |
/ |
88)
|
= |
1.64772727 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Florence Elementary
|
8 |
Last steps
Compute the average
| 2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
|
-20
|
-11
|
-3
|
10
|
8
|
-16.0 |
-3.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 32.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -39.2
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:
