These rooms tend to be smaller, so the full is a good choice to put in the kids’ rooms if you want to upgrade from twin beds. The full offers plenty of space to growing teenagers without breaking the bank or taking up their whole bedroom. However, with the full, you do run the risk of kids growing out of their beds if they wind up being taller than 6 feet. If you also want your kids to be able to take their beds with them to their own homes someday, a queen might be a better solution.