I have three turkey flocks.
1) The one tom with the girls can be aggressive and he is definitely aware of me entering into the pasture. He usually escorts me as I do the chore of giving a treat or more food or closing up for the night. The tom very seldom does a love peck. He has never "attacked" me. And his cute mating dance he does to me is well, pretty darn interesting.
This tom actually live in my house while he recovered from a severe beat down by his turkey mates, when all were together.
He has healed and now living with the girls and a few guineas.
2) The all boy flock of turkeys are great. None attack me or threaten me. They are in the pasture adjacent to the boy/girl flock. There is a pair of guineas that live with them.
3) The third flock are poults. They are so friendly and full of energy! They will either be joined with the existing flocks are be their own flock outside.
The turkeys do sound an alarm, usually in response to the guineas OR to an overhead predator that they see. As funny as this sounds, I do try to train all of the animals to be able to identify the predator birds and to sound an alarm.
I have (past tense) raised chickens and turkeys and ducks in the same space when they were young. No problems. As soon as the turkeys are old enough (completely feathered) they moved to the outdoor space. Occasionally, a not so nice rooster will join the boy turkey flock in their pasture. He's fine. The boy turkeys are more interested in trying to get the girl turkeys attention in the next flock to care whose in with them. The boy turkeys will sometimes follow me around and talk to me, but don't hurt me at all.
My suggestions would include -
-- spend time with the turkeys every day.
-- keep one gender of turkeys, but not both where kids would be in their space.
-- remember that the turkeys have an incredible strength.
-- teach the kids good manners around the turkeys AND how to identify the behaviors so they can "read" what the turkey is saying.