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 |
2262563 |
2441 |
- |
2436 |
= |
5 |
* |
(100 |
/ |
336)
|
= |
1.48809524 |
| 4 |
2262566 |
2455 |
- |
2485 |
= |
-30 |
* |
(116 |
/ |
336)
|
= |
-10.35714285 |
| 5 |
2262567 |
2505 |
- |
2528 |
= |
-23 |
* |
(120 |
/ |
336)
|
= |
-8.21428571 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Spreckels Elementary
|
-17 |
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 |
69424 |
2427 |
- |
2436 |
= |
-9 |
* |
(99 |
/ |
326)
|
= |
-2.73312883 |
| 4 |
69425 |
2476 |
- |
2485 |
= |
-9 |
* |
(112 |
/ |
326)
|
= |
-3.09202454 |
| 5 |
69427 |
2505 |
- |
2528 |
= |
-23 |
* |
(115 |
/ |
326)
|
= |
-8.11349693 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Spreckels Elementary
|
-14 |
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 |
71256 |
2446 |
- |
2436 |
= |
10 |
* |
(91 |
/ |
313)
|
= |
2.90734824 |
| 4 |
71258 |
2490 |
- |
2485 |
= |
5 |
* |
(107 |
/ |
313)
|
= |
1.70926518 |
| 5 |
71260 |
2535 |
- |
2528 |
= |
7 |
* |
(115 |
/ |
313)
|
= |
2.57188498 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Spreckels Elementary
|
7 |
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 |
71401 |
2442 |
- |
2436 |
= |
6 |
* |
(93 |
/ |
298)
|
= |
1.87248322 |
| 4 |
71403 |
2498 |
- |
2485 |
= |
13 |
* |
(96 |
/ |
298)
|
= |
4.18791946 |
| 5 |
71405 |
2506 |
- |
2528 |
= |
-22 |
* |
(109 |
/ |
298)
|
= |
-8.04697986 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Spreckels Elementary
|
-2 |
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 |
71889 |
2464 |
- |
2436 |
= |
28 |
* |
(101 |
/ |
294)
|
= |
9.61904759 |
| 4 |
71890 |
2507 |
- |
2485 |
= |
22 |
* |
(98 |
/ |
294)
|
= |
7.33333333 |
| 5 |
71891 |
2539 |
- |
2528 |
= |
11 |
* |
(95 |
/ |
294)
|
= |
3.55442176 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Spreckels Elementary
|
21 |
Last steps
Compute the average
| 2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
|
-17
|
-14
|
7
|
-2
|
21
|
-5.0 |
-1.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 44.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -46.0
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:
