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	1541680	2396	-	2436	=	-40	*	(83	/	233)	=	-14.248927
4	1541683	2459	-	2485	=	-26	*	(89	/	233)	=	-9.93133045
5	1541684	2468	-	2528	=	-60	*	(61	/	233)	=	-15.7081545
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Franklin Elementary											-40

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	48299	2413	-	2436	=	-23	*	(65	/	232)	=	-6.4439655
4	48300	2467	-	2485	=	-18	*	(81	/	232)	=	-6.28448276
5	48303	2479	-	2528	=	-49	*	(86	/	232)	=	-18.1637931
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Franklin Elementary											-31

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	49627	2415	-	2436	=	-21	*	(92	/	236)	=	-8.18644067
4	49629	2489	-	2485	=	4	*	(65	/	236)	=	1.10169491
5	49631	2516	-	2528	=	-12	*	(79	/	236)	=	-4.01694914
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Franklin Elementary											-11

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	49640	2405	-	2436	=	-31	*	(61	/	208)	=	-9.09134613
4	49643	2485	-	2485	=	0	*	(82	/	208)	=	0.0
5	49645	2543	-	2528	=	15	*	(65	/	208)	=	4.6875
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Franklin Elementary											-4

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	49839	2427	-	2436	=	-9	*	(58	/	190)	=	-2.74736841
4	49840	2516	-	2485	=	31	*	(57	/	190)	=	9.3
5	49841	2529	-	2528	=	1	*	(75	/	190)	=	0.39473684
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Franklin Elementary											7

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-40	-31	-11	-4	7	-79.0	-15.8

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: 41.2

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -72.8

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	89%	95%	93%	89%	87%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file