We're starting my DS5 in regular K. They have no gifted programs here until 3rd grade. DS reads at about 3rd grade level and has a high math aptitude...but we feel he needs the K to learn how to 'do' school. His principal said they do try to group the advanced kids. A good friend's son was put in first grade for reading and math at the school. I'm thinking this is an experiment year...we can always pull him out if it's not working. My DS is a people-pleaser, so I don't expect behavioral issues of great seriousness. But I worry he won't be challenged.