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	2244277	2404	-	2436	=	-32	*	(51	/	137)	=	-11.91240874
4	2244280	2455	-	2485	=	-30	*	(39	/	137)	=	-8.54014596
5	2244281	2461	-	2528	=	-67	*	(47	/	137)	=	-22.98540143
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Clay Elementary											-43

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	68888	2416	-	2436	=	-20	*	(51	/	136)	=	-7.5
4	68890	2451	-	2485	=	-34	*	(46	/	136)	=	-11.5
5	68892	2480	-	2528	=	-48	*	(39	/	136)	=	-13.76470584
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Clay Elementary											-33

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	70721	2450	-	2436	=	14	*	(42	/	140)	=	4.2
4	70723	2462	-	2485	=	-23	*	(50	/	140)	=	-8.21428571
5	70725	2457	-	2528	=	-71	*	(48	/	140)	=	-24.34285708
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Clay Elementary											-28

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	70868	2419	-	2436	=	-17	*	(52	/	148)	=	-5.97297297
4	70870	2485	-	2485	=	0	*	(43	/	148)	=	0.0
5	70872	2476	-	2528	=	-52	*	(53	/	148)	=	-18.62162162
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Clay Elementary											-25

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	71355	2444	-	2436	=	8	*	(44	/	134)	=	2.62686566
4	71356	2452	-	2485	=	-33	*	(51	/	134)	=	-12.55970146
5	71357	2476	-	2528	=	-52	*	(39	/	134)	=	-15.13432835
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Clay Elementary											-25

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-43	-33	-28	-25	-25	-154.0	-30.8

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: -9.8

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -51.8

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:

	2015	2016	2017	2018	2019
Percent	85%	86%	80%	83%	80%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file