My dd12 took the SAT in both 6th and 7th grade and the ACT in 8th. She was 10 the first time she took the SAT due to a grade skip. She's not one of those way, way out there kids. I wasn't aware that it was that common either until we started with the talent search testing in 4th at the school's suggestion as part of the grade skip eval. Taking college admission tests early no longer looks odd to me either wink !