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	95381	2390	-	2436	=	-46	*	(51	/	143)	=	-16.40559438
4	95384	2454	-	2485	=	-31	*	(47	/	143)	=	-10.18881117
5	95385	2478	-	2528	=	-50	*	(45	/	143)	=	-15.7342657
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for ACORN Woodland Elementary											-42

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	2694	2391	-	2436	=	-45	*	(48	/	140)	=	-15.42857139
4	2696	2452	-	2485	=	-33	*	(45	/	140)	=	-10.60714284
5	2698	2458	-	2528	=	-70	*	(47	/	140)	=	-23.49999995
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for ACORN Woodland Elementary											-50

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	2767	2417	-	2436	=	-19	*	(49	/	145)	=	-6.42068965
4	2770	2456	-	2485	=	-29	*	(49	/	145)	=	-9.79999999
5	2772	2452	-	2528	=	-76	*	(47	/	145)	=	-24.63448276
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for ACORN Woodland Elementary											-41

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	2772	2417	-	2436	=	-19	*	(46	/	140)	=	-6.24285713
4	2774	2459	-	2485	=	-26	*	(47	/	140)	=	-8.72857141
5	2776	2495	-	2528	=	-33	*	(47	/	140)	=	-11.07857141
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for ACORN Woodland Elementary											-26

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	2793	2469	-	2436	=	33	*	(47	/	140)	=	11.07857141
4	2794	2445	-	2485	=	-40	*	(45	/	140)	=	-12.85714284
5	2795	2462	-	2528	=	-66	*	(48	/	140)	=	-22.62857137
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for ACORN Woodland Elementary											-24

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-42	-50	-41	-26	-24	-183.0	-36.6

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: -3.6

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -69.6

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:

	2015	2016	2017	2018	2019
Percent	92%	94%	94%	92%	92%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file