#' Identify professional certs
#' @param a file name
#' @return file with only professional certifications
#' @export
professionals <- function(a = file){
#source: https://stackoverflow.com/questions/22249702/delete-rows-containing-specific-strings-in-r
d <- a[grepl("Principal|Superintendent|School Counselor|Reading Specialist|Educational Diagnostician", a$Test.Name),]
return(d)
}
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