Hi. Look up district 203 in Naperville. They have some good options in their gifted program. Napverville district 204 has good options for 6th grade & up - particularly if you are looking for a music program.
Just an FYI though, a good percentage of people in Naperville have their kids enrolled in Private school supplement & private tutoring on top of public school. In kindergarten - 2nd grades the gifted and "advanced" students are mixed because of similiar test scores. That gets ironed out by 3rd grade for the most part.
