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	2257926	2413	-	2436	=	-23	*	(119	/	586)	=	-4.67064846
4	2257927	2462	-	2485	=	-23	*	(116	/	586)	=	-4.55290101
5	2257930	2491	-	2528	=	-37	*	(115	/	586)	=	-7.26109212
6	2257931	2547	-	2552	=	-5	*	(88	/	586)	=	-0.75085324
7	2257934	2540	-	2567	=	-27	*	(72	/	586)	=	-3.31740614
8	2257935	2550	-	2586	=	-36	*	(76	/	586)	=	-4.66894195
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Language Academy											-25

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	69288	2400	-	2436	=	-36	*	(113	/	581)	=	-7.00172114
4	69290	2470	-	2485	=	-15	*	(114	/	581)	=	-2.94320138
5	69291	2514	-	2528	=	-14	*	(105	/	581)	=	-2.53012047
6	69294	2525	-	2552	=	-27	*	(99	/	581)	=	-4.60068846
7	69296	2577	-	2567	=	10	*	(82	/	581)	=	1.41135972
8	69298	2572	-	2586	=	-14	*	(68	/	581)	=	-1.6385542
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Language Academy											-17

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	71121	2414	-	2436	=	-22	*	(120	/	600)	=	-4.4
4	71122	2449	-	2485	=	-36	*	(111	/	600)	=	-6.66
5	71124	2508	-	2528	=	-20	*	(100	/	600)	=	-3.33333332
6	71127	2540	-	2552	=	-12	*	(90	/	600)	=	-1.8
7	71129	2525	-	2567	=	-42	*	(100	/	600)	=	-6.99999997
8	71131	2581	-	2586	=	-5	*	(79	/	600)	=	-0.65833333
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Language Academy											-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	71266	2419	-	2436	=	-17	*	(105	/	597)	=	-2.98994973
4	71267	2472	-	2485	=	-13	*	(114	/	597)	=	-2.48241205
5	71270	2506	-	2528	=	-22	*	(107	/	597)	=	-3.94304856
6	71271	2551	-	2552	=	-1	*	(95	/	597)	=	-0.15912898
7	71274	2590	-	2567	=	23	*	(87	/	597)	=	3.35175879
8	71275	2574	-	2586	=	-12	*	(89	/	597)	=	-1.78894471
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Language Academy											-8

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	71756	2422	-	2436	=	-14	*	(93	/	566)	=	-2.30035336
4	71757	2475	-	2485	=	-10	*	(102	/	566)	=	-1.80212014
5	71758	2515	-	2528	=	-13	*	(110	/	566)	=	-2.52650176
6	71759	2566	-	2552	=	14	*	(96	/	566)	=	2.3745583
7	71760	2579	-	2567	=	12	*	(84	/	566)	=	1.78091872
8	71761	2617	-	2586	=	31	*	(81	/	566)	=	4.43639574
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Language Academy											2

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-25	-17	-24	-8	2	-72.0	-14.4

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: 18.6

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -47.4

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	45%	46%	43%	45%	43%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file