Not sure about Treehouse, but they're targeting a completely different market than Codecadamy - codecademy is really targeting newcomers to coding, while Code S

Not sure about Treehouse, but they're targeting a completely different market than Codecadamy - codecademy is really targeting newcomers to coding, while Code School is more for programming professionals to polish up on new (to them) technology / frameworks, etc. As an aside, subscribing to Code School is well worth the $25 a month - a great value!