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	1468904	2363	-	2436	=	-73	*	(71	/	290)	=	-17.87241378
4	1468907	2426	-	2485	=	-59	*	(75	/	290)	=	-15.25862065
5	1468908	2453	-	2528	=	-75	*	(76	/	290)	=	-19.65517238
6	1468911	2500	-	2552	=	-52	*	(68	/	290)	=	-12.19310342
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for C. C. Violette Elementary											-65

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	46117	2370	-	2436	=	-66	*	(72	/	290)	=	-16.38620689
4	46119	2420	-	2485	=	-65	*	(68	/	290)	=	-15.24137927
5	46120	2452	-	2528	=	-76	*	(78	/	290)	=	-20.44137929
6	46122	2490	-	2552	=	-62	*	(72	/	290)	=	-15.39310344
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for C. C. Violette Elementary											-67

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	47358	2371	-	2436	=	-65	*	(71	/	266)	=	-17.34962405
4	47361	2418	-	2485	=	-67	*	(65	/	266)	=	-16.37218043
5	47363	2448	-	2528	=	-80	*	(59	/	266)	=	-17.74436088
6	47365	2510	-	2552	=	-42	*	(71	/	266)	=	-11.21052631
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for C. C. Violette Elementary											-63

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	47369	2397	-	2436	=	-39	*	(57	/	249)	=	-8.92771082
4	47370	2445	-	2485	=	-40	*	(61	/	249)	=	-9.79919676
5	47373	2437	-	2528	=	-91	*	(66	/	249)	=	-24.12048184
6	47374	2500	-	2552	=	-52	*	(65	/	249)	=	-13.57429715
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for C. C. Violette Elementary											-56

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	47548	2414	-	2436	=	-22	*	(48	/	216)	=	-4.88888888
4	47549	2466	-	2485	=	-19	*	(46	/	216)	=	-4.04629628
5	47550	2468	-	2528	=	-60	*	(62	/	216)	=	-17.22222222
6	47551	2500	-	2552	=	-52	*	(60	/	216)	=	-14.4444444
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for C. C. Violette Elementary											-41

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-65	-67	-63	-56	-41	-292.0	-58.4

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: -28.4

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -88.4

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	91%	86%	86%	86%	85%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file