st: replacing a list of values within a loop

["Gushta, Matthew" <mgushta@air.org>]

STATA lister's--
i currently have 4 datasets containing teacher id's (var: teacherX).
many teacher id's have been incorrectly entered and i would like to
replace them with the correct values. for each dataset, i have
identified 2 lists: 
1) list of BAD teacher id's;
2) list of GOOD teacher id's, to replace 1.

i am wondering if these lists of values can somehow be incorporated in a
"forvalues" loop? can i assign the values as a scalar? my anticipated
coding is attached below. where "list of values" is written is where i
hope a minor miracle will occur.

many thanks for any suggestions,

--matthew

/************************/
local data1 "G3M"
local data2 "G3R"
local data3 "G8M"
local data4 "G8R"
	// datafiles

local good1 "list of values"
local good2 "list of values"
local good3 "list of values"
local good4 "list of values"
	// acceptable values

local bad1 "list of values"
local bad2 "list of values"
local bad3 "list of values"
local bad4 "list of values"
	// rejected values

forvalues i = 1/4 {
  log using "C:/`data`i''_FixTeacher.txt", replace text
  use "C:/`data`i''.dta", clear
  replace teacherX==`good`i'' if (teacherX==`bad`i'')
	// replace bad values with good values
  save "C:/`data`i''_Clean.dta", replace 
}
/************************/


matthew m. gushta -- research associate
computer & statistical sciences center
american institutes for research
mgushta@air.org -- 202.403.5079

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