Yea probably. There's no reason to hold them back or subject them to peer abuse, or condition them to hide their gift.

Very gifted students will start knowing more about what they are studying than the teacher between 3rd and 5th grades. They will be completely bored throughout high school if held back to the speed of even above average students. This teaches them that they can coast.

It's a huge disservice to our society that our smartest kids are hobbled and quite often exposed to abuse from peers, leading them to be isolated and preventing them from learning appropriate social skills. Certainly this isn't always what happens, but it very often is exactly what happens.