Parents. what age would you allow boy/girl parties?

Any age. But not for sleepovers. The boys can be there for the party, for the dinner, for the movie, but when it's time to go to bed, it's time for the boys to hit the road.

My children have always had boy/girl parties. My youngest daughter turned 3 in September, and there were teen boys there who were not family members!

I do not know about others, but my children have friends who are the opposite gender and we want them to celebrate with us as much as we want their friends who are the same gender to celebrate.

EDITED TO ADD: As for sleepovers, that is hard. I would perhaps consider it under certain circumstances, but ultimately the boys would sleep in one place and the girls in another and there would be some strict supervision. We rarely do sleepovers, though, with more than one guest.

My daughter is 2 and both her 1st and 2nd yr old parties were boy/girl. The only time it would be only for girls is a sleepover. Boys could come for cake and ice cream but head home by 7 or 8. Then girls only.

Any age... kids have boy and girl friends usually... I'm assuming these are supervised parties, right? If it's like a sleepover party then it's only the same sex friends that can stay overnight.

I don't think there should be an age limit. It would just depend on how much I supervise them. The closer to teen they are the more I would want to supervise the party.

It depends on what type of party. My child has any and all of her friends at hers but she is not even 10 yet.