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	330912	2408	-	2436	=	-28	*	(66	/	228)	=	-8.10526315
4	330913	2406	-	2485	=	-79	*	(62	/	228)	=	-21.4824561
5	330916	2431	-	2528	=	-97	*	(55	/	228)	=	-23.39912279
6	330917	2461	-	2552	=	-91	*	(45	/	228)	=	-17.96052631
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Robinson Elementary											-71

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	9874	2405	-	2436	=	-31	*	(57	/	248)	=	-7.12499998
4	9875	2428	-	2485	=	-57	*	(72	/	248)	=	-16.54838706
5	9877	2455	-	2528	=	-73	*	(67	/	248)	=	-19.72177417
6	9880	2483	-	2552	=	-69	*	(52	/	248)	=	-14.46774191
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Robinson Elementary											-58

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	10202	2375	-	2436	=	-61	*	(69	/	260)	=	-16.18846152
4	10204	2447	-	2485	=	-38	*	(62	/	260)	=	-9.06153844
5	10205	2448	-	2528	=	-80	*	(65	/	260)	=	-20.0
6	10207	2502	-	2552	=	-50	*	(64	/	260)	=	-12.3076923
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Robinson Elementary											-58

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	10219	2407	-	2436	=	-29	*	(54	/	230)	=	-6.80869563
4	10222	2413	-	2485	=	-72	*	(57	/	230)	=	-17.84347819
5	10223	2461	-	2528	=	-67	*	(60	/	230)	=	-17.47826086
6	10226	2519	-	2552	=	-33	*	(59	/	230)	=	-8.46521739
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Robinson Elementary											-51

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	10300	2387	-	2436	=	-49	*	(74	/	245)	=	-14.79999998
4	10301	2455	-	2485	=	-30	*	(59	/	245)	=	-7.22448978
5	10302	2458	-	2528	=	-70	*	(51	/	245)	=	-14.57142855
6	10303	2537	-	2552	=	-15	*	(61	/	245)	=	-3.73469387
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Robinson Elementary											-40

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-71	-58	-58	-51	-40	-278.0	-55.6

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: -22.6

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	88%	89%	89%	90%	88%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file