M.T.
I have triplets (2 boys and a girl) who are 5 1/2 and a 16 yr old daughter. I have had the triplets in a bunk bed since they were 3 yrs old. We have never had any accidents or problems with anyone getting hurt. I think they are a good idea. The boys have a loft bed and a twin underneith and the girls have an A frame with the bottom being a full sized for my teenager and the top being a twin for my 5 yr old. I am sure he will love it. I was nervous when I first switched them as well.