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	1439754	2446	-	2436	=	10	*	(105	/	338)	=	3.10650887
4	1439755	2492	-	2485	=	7	*	(107	/	338)	=	2.21597633
5	1439758	2516	-	2528	=	-12	*	(126	/	338)	=	-4.47337278
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for George White Elementary											1

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	45320	2441	-	2436	=	5	*	(99	/	310)	=	1.59677419
4	45323	2520	-	2485	=	35	*	(102	/	310)	=	11.51612903
5	45325	2551	-	2528	=	23	*	(109	/	310)	=	8.08709677
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for George White Elementary											21

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	46530	2436	-	2436	=	0	*	(81	/	304)	=	0.0
4	46532	2490	-	2485	=	5	*	(108	/	304)	=	1.77631579
5	46534	2544	-	2528	=	16	*	(115	/	304)	=	6.05263157
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for George White Elementary											8

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	46541	2470	-	2436	=	34	*	(92	/	280)	=	11.17142855
4	46542	2488	-	2485	=	3	*	(77	/	280)	=	0.825
5	46545	2533	-	2528	=	5	*	(111	/	280)	=	1.98214286
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for George White Elementary											14

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	46723	2466	-	2436	=	30	*	(93	/	261)	=	10.68965517
4	46724	2523	-	2485	=	38	*	(89	/	261)	=	12.95785438
5	46725	2536	-	2528	=	8	*	(79	/	261)	=	2.42145594
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for George White Elementary											26

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
1	21	8	14	26	70.0	14.0

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: 41.0

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -13.0

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:

	2015	2016	2017	2018	2019
Percent	18%	18%	17%	23%	23%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file