My 48lb daughter has been sleeping on this bed for about 7 months. Not only has the slat broke, I am constantly tightening the hardware. All the screws need to be tightened about every 2 weeks, or the bed gets very squeaky  wobbly. 
Like I said she is only 48lbs  I dont let her jump on it, or anything. 
Kids bed should definitely hold up to way more then what my daughter can do. Not happy. Wish I saved my money  got her a sturdier safer bed.