I believe the GES3 is a questionnaire, not a test.

http://hawthorne-ed.com/images/gifted/samples/swf_files/h04150sb.pdf

Do you know your district cutoff for the gifted program? Some districts are more inclusive and aim for the top 10 to 15%. Others (including ours) aim for the top 2%, so that would be a score in the 98th to 99.9 percentile. That would usually be an IQ score of 130 or higher.