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 |
92246 |
2356 |
- |
2436 |
= |
-80 |
* |
(64 |
/ |
164)
|
= |
-31.21951216 |
| 4 |
92247 |
2397 |
- |
2485 |
= |
-88 |
* |
(49 |
/ |
164)
|
= |
-26.29268286 |
| 5 |
92250 |
2406 |
- |
2528 |
= |
-122 |
* |
(51 |
/ |
164)
|
= |
-37.9390243 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Markham Elementary
|
-95 |
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 |
2593 |
2346 |
- |
2436 |
= |
-90 |
* |
(46 |
/ |
165)
|
= |
-25.09090902 |
| 4 |
2595 |
2375 |
- |
2485 |
= |
-110 |
* |
(60 |
/ |
165)
|
= |
-39.99999993 |
| 5 |
2598 |
2393 |
- |
2528 |
= |
-135 |
* |
(59 |
/ |
165)
|
= |
-48.2727272 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Markham Elementary
|
-113 |
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 |
2666 |
2351 |
- |
2436 |
= |
-85 |
* |
(61 |
/ |
162)
|
= |
-32.00617277 |
| 4 |
2667 |
2400 |
- |
2485 |
= |
-85 |
* |
(44 |
/ |
162)
|
= |
-23.08641973 |
| 5 |
2669 |
2408 |
- |
2528 |
= |
-120 |
* |
(57 |
/ |
162)
|
= |
-42.22222212 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Markham Elementary
|
-97 |
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 |
2670 |
2330 |
- |
2436 |
= |
-106 |
* |
(55 |
/ |
159)
|
= |
-36.66666659 |
| 4 |
2671 |
2363 |
- |
2485 |
= |
-122 |
* |
(59 |
/ |
159)
|
= |
-45.2704402 |
| 5 |
2674 |
2398 |
- |
2528 |
= |
-130 |
* |
(45 |
/ |
159)
|
= |
-36.79245271 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Markham Elementary
|
-119 |
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 |
2691 |
2321 |
- |
2436 |
= |
-115 |
* |
(50 |
/ |
165)
|
= |
-34.84848485 |
| 4 |
2692 |
2348 |
- |
2485 |
= |
-137 |
* |
(55 |
/ |
165)
|
= |
-45.66666662 |
| 5 |
2693 |
2360 |
- |
2528 |
= |
-168 |
* |
(60 |
/ |
165)
|
= |
-61.09090898 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Markham Elementary
|
-142 |
Last steps
Compute the average
| 2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
|
-95
|
-113
|
-97
|
-119
|
-142
|
-566.0 |
-113.2 |
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: -170.2
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:
