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	316418	2374	-	2436	=	-62	*	(123	/	461)	=	-16.5422993
4	316421	2415	-	2485	=	-70	*	(110	/	461)	=	-16.70281991
5	316422	2418	-	2528	=	-110	*	(112	/	461)	=	-26.72451188
6	316425	2475	-	2552	=	-77	*	(116	/	461)	=	-19.37527115
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Vang Pao Elementary											-79

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	9443	2381	-	2436	=	-55	*	(98	/	439)	=	-12.27790432
4	9446	2425	-	2485	=	-60	*	(121	/	439)	=	-16.53758538
5	9448	2452	-	2528	=	-76	*	(111	/	439)	=	-19.21640088
6	9449	2494	-	2552	=	-58	*	(109	/	439)	=	-14.40091112
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Vang Pao Elementary											-62

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	9755	2393	-	2436	=	-43	*	(128	/	441)	=	-12.48072562
4	9758	2458	-	2485	=	-27	*	(91	/	441)	=	-5.57142856
5	9760	2463	-	2528	=	-65	*	(115	/	441)	=	-16.95011338
6	9762	2527	-	2552	=	-25	*	(107	/	441)	=	-6.06575963
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Vang Pao 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	9764	2399	-	2436	=	-37	*	(109	/	443)	=	-9.10383746
4	9766	2454	-	2485	=	-31	*	(127	/	443)	=	-8.88713317
5	9768	2486	-	2528	=	-42	*	(97	/	443)	=	-9.19638825
6	9770	2516	-	2552	=	-36	*	(110	/	443)	=	-8.93905189
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Vang Pao Elementary											-36

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	9854	2424	-	2436	=	-12	*	(141	/	459)	=	-3.6862745
4	9855	2477	-	2485	=	-8	*	(103	/	459)	=	-1.79520697
5	9856	2468	-	2528	=	-60	*	(126	/	459)	=	-16.47058818
6	9857	2551	-	2552	=	-1	*	(89	/	459)	=	-0.19389978
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Vang Pao Elementary											-22

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-79	-62	-41	-36	-22	-240.0	-48.0

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: 18.0

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -114.0

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	97%	96%	97%	98%	98%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file