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	340288	2392	-	2436	=	-44	*	(73	/	276)	=	-11.63768113
4	340291	2392	-	2485	=	-93	*	(61	/	276)	=	-20.55434776
5	340292	2446	-	2528	=	-82	*	(70	/	276)	=	-20.79710142
6	340295	2485	-	2552	=	-67	*	(72	/	276)	=	-17.47826086
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Lawless Elementary											-70

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	10141	2409	-	2436	=	-27	*	(72	/	273)	=	-7.1208791
4	10144	2423	-	2485	=	-62	*	(77	/	273)	=	-17.48717948
5	10146	2443	-	2528	=	-85	*	(58	/	273)	=	-18.05860802
6	10148	2454	-	2552	=	-98	*	(66	/	273)	=	-23.69230762
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Lawless Elementary											-66

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	10470	2410	-	2436	=	-26	*	(72	/	278)	=	-6.73381293
4	10471	2417	-	2485	=	-68	*	(75	/	278)	=	-18.3453237
5	10474	2459	-	2528	=	-69	*	(73	/	278)	=	-18.11870503
6	10476	2488	-	2552	=	-64	*	(58	/	278)	=	-13.35251795
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Lawless Elementary											-57

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	10481	2424	-	2436	=	-12	*	(68	/	290)	=	-2.8137931
4	10483	2435	-	2485	=	-50	*	(79	/	290)	=	-13.62068965
5	10485	2464	-	2528	=	-64	*	(68	/	290)	=	-15.00689651
6	10487	2452	-	2552	=	-100	*	(75	/	290)	=	-25.8620689
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Lawless Elementary											-57

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	10562	2428	-	2436	=	-8	*	(82	/	291)	=	-2.25429553
4	10563	2461	-	2485	=	-24	*	(71	/	291)	=	-5.8556701
5	10564	2461	-	2528	=	-67	*	(71	/	291)	=	-16.34707902
6	10565	2473	-	2552	=	-79	*	(67	/	291)	=	-18.18900337
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Lawless Elementary											-43

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-70	-66	-57	-57	-43	-293.0	-58.6

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: -28.6

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -88.6

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	83%	86%	87%	84%	82%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file