I second this. Both of my children did this, my daughter started in 4th grade. The kits are deceptive, they look like Legos but you can build some remarkably sophisticated robots. With the more advanced ones you can do some pretty advanced programming too. The collaborative way the competition is run is quite clever too. They have a full spectrum of touch points that makes it fairly accessible and satisfying for the children. The other thing I like more than I thought, they provide a couple good starting points for the children to build off of, for the younger kids they are much more likely to succeed by building off of a working plan rather than cutting from whole cloth.