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	2136189	2420	-	2436	=	-16	*	(73	/	239)	=	-4.88702928
4	2136192	2475	-	2485	=	-10	*	(62	/	239)	=	-2.59414225
5	2136193	2509	-	2528	=	-19	*	(54	/	239)	=	-4.29288702
6	2136196	2517	-	2552	=	-35	*	(50	/	239)	=	-7.3221757
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Silver Wing Elementary											-19

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	65583	2405	-	2436	=	-31	*	(62	/	266)	=	-7.22556389
4	65585	2460	-	2485	=	-25	*	(74	/	266)	=	-6.9548872
5	65587	2489	-	2528	=	-39	*	(69	/	266)	=	-10.11654134
6	65588	2526	-	2552	=	-26	*	(61	/	266)	=	-5.96240601
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Silver Wing Elementary											-30

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	67401	2471	-	2436	=	35	*	(48	/	242)	=	6.94214875
4	67402	2452	-	2485	=	-33	*	(56	/	242)	=	-7.63636361
5	67405	2500	-	2528	=	-28	*	(73	/	242)	=	-8.44628098
6	67407	2567	-	2552	=	15	*	(65	/	242)	=	4.02892562
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Silver Wing Elementary											-5

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	67507	2468	-	2436	=	32	*	(53	/	239)	=	7.0962343
4	67508	2478	-	2485	=	-7	*	(54	/	239)	=	-1.58158995
5	67510	2478	-	2528	=	-50	*	(59	/	239)	=	-12.3430962
6	67513	2517	-	2552	=	-35	*	(73	/	239)	=	-10.69037655
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Silver Wing Elementary											-18

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	68022	2445	-	2436	=	9	*	(54	/	216)	=	2.25
4	68023	2492	-	2485	=	7	*	(56	/	216)	=	1.81481481
5	68024	2531	-	2528	=	3	*	(50	/	216)	=	0.69444444
6	68025	2517	-	2552	=	-35	*	(56	/	216)	=	-9.07407407
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Silver Wing Elementary											-4

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-19	-30	-5	-18	-4	-76.0	-15.2

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: 14.8

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -45.2

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	81%	81%	79%	81%	84%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file