I say leave the age groups as they are. Most of our freshmen have their first exposure to wrestling in high school. Last year, my son wrestled for the 1st time as a high school Freshman and even though he qualified for Kids State, the real advantage went to the more experinced kids regardless of age. Also, many schools combine 7th, 8th & 9th grades at a Junior High and have only 10-12 at the high school.