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	896471	2435	-	2436	=	-1	*	(41	/	167)	=	-0.24550898
4	896474	2489	-	2485	=	4	*	(44	/	167)	=	1.05389221
5	896475	2503	-	2528	=	-25	*	(52	/	167)	=	-7.78443113
6	896478	2497	-	2552	=	-55	*	(30	/	167)	=	-9.88023949
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Dorris Place Elementary											-17

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	28328	2401	-	2436	=	-35	*	(50	/	178)	=	-9.83146066
4	28330	2471	-	2485	=	-14	*	(43	/	178)	=	-3.38202246
5	28333	2490	-	2528	=	-38	*	(38	/	178)	=	-8.11235955
6	28334	2510	-	2552	=	-42	*	(47	/	178)	=	-11.08988761
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Dorris Place Elementary											-32

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	28896	2432	-	2436	=	-4	*	(47	/	164)	=	-1.14634146
4	28898	2463	-	2485	=	-22	*	(47	/	164)	=	-6.30487803
5	28900	2517	-	2528	=	-11	*	(40	/	164)	=	-2.68292683
6	28902	2476	-	2552	=	-76	*	(30	/	164)	=	-13.902439
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Dorris Place Elementary											-24

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	28944	2462	-	2436	=	26	*	(40	/	169)	=	6.15384614
4	28946	2468	-	2485	=	-17	*	(47	/	169)	=	-4.72781064
5	28948	2507	-	2528	=	-21	*	(48	/	169)	=	-5.96449703
6	28950	2475	-	2552	=	-77	*	(34	/	169)	=	-15.49112419
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Dorris Place Elementary											-20

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	29125	2441	-	2436	=	5	*	(38	/	165)	=	1.15151515
4	29126	2510	-	2485	=	25	*	(38	/	165)	=	5.75757575
5	29127	2498	-	2528	=	-30	*	(45	/	165)	=	-8.18181816
6	29128	2517	-	2552	=	-35	*	(44	/	165)	=	-9.33333331
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Dorris Place Elementary											-11

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-17	-32	-24	-20	-11	-104.0	-20.8

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: 0.2

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -41.8

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	78%	80%	79%	81%	85%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file