Just looking for some advice on some comments made on another thread - has anyone here grade-skipped kindergarten and gone directly to 1st grade at age 5? If so, has it been a positive experience?

We are considering approaching the school with the idea, but I don't even know where to begin. I have visions of walking into a school where I know no teachers, administators, or resource staff, shoving some test scores at them, and asking for my kid to be placed in 1st grade. I'm sure there's a better way! I just don't know how open they'd be to the idea having never taught my kid in one of their classrooms.....and being a middle school teacher myself, I can just see the eye rolls when this one is discussed in the teacher's lounge ("Yeah right, every parent thinks their 5-year-old is gifted!").