L.S.
With my daughter we went straight to a full size bed and she did fine. We did use rails to keep her from falling out. With my son, we tried a toddler bed we received from a family member and my son hated it and wouldn't stay in it. We got him a full size bed and he loved it. We put it against the wall and used a rail for the one side. To help both kids climb into their beds we bought a step stool to get up and out of the bed with ease.