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	2130532	2392	-	2436	=	-44	*	(49	/	206)	=	-10.46601939
4	2130533	2470	-	2485	=	-15	*	(58	/	206)	=	-4.22330097
5	2130536	2470	-	2528	=	-58	*	(42	/	206)	=	-11.82524271
6	2130537	2466	-	2552	=	-86	*	(57	/	206)	=	-23.79611649
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Rohr (Fred H.) Elementary											-50

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	65415	2414	-	2436	=	-22	*	(51	/	206)	=	-5.44660193
4	65416	2469	-	2485	=	-16	*	(51	/	206)	=	-3.96116504
5	65419	2486	-	2528	=	-42	*	(59	/	206)	=	-12.02912617
6	65421	2514	-	2552	=	-38	*	(45	/	206)	=	-8.30097084
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Rohr (Fred H.) Elementary											-30

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	67230	2401	-	2436	=	-35	*	(36	/	203)	=	-6.20689654
4	67232	2420	-	2485	=	-65	*	(55	/	203)	=	-17.6108374
5	67234	2485	-	2528	=	-43	*	(51	/	203)	=	-10.80295566
6	67237	2542	-	2552	=	-10	*	(61	/	203)	=	-3.0049261
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Rohr (Fred H.) Elementary											-38

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	67337	2396	-	2436	=	-40	*	(33	/	182)	=	-7.25274724
4	67338	2426	-	2485	=	-59	*	(45	/	182)	=	-14.58791207
5	67341	2445	-	2528	=	-83	*	(49	/	182)	=	-22.34615383
6	67342	2527	-	2552	=	-25	*	(55	/	182)	=	-7.55494505
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Rohr (Fred H.) Elementary											-52

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	67852	2421	-	2436	=	-15	*	(46	/	179)	=	-3.8547486
4	67853	2423	-	2485	=	-62	*	(38	/	179)	=	-13.16201112
5	67854	2428	-	2528	=	-100	*	(43	/	179)	=	-24.0223463
6	67855	2506	-	2552	=	-46	*	(52	/	179)	=	-13.36312848
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Rohr (Fred H.) Elementary											-54

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-50	-30	-38	-52	-54	-224.0	-44.8

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: -14.8

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -74.8

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	79%	77%	80%	84%	86%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file