Thanks for the quick replies! Between these suggestions, I think I can figure it out. Wouldn't it be simpler if everyone referred to the percentiles instead? Would that even make sense? I noticed that the Mensa organization required their members to be above the 98th percentile on any of the standard usual tests in order to eliminate confusion about the actual scores.
Do some authors refer to "highly" gifted when they really mean EG or PG? These terms all seem to be thrown about much to casually.

Thanks!!
Dawn