Mom or Dad ... you're probably the visitor here!
Yes, the UNCALENDAR® LIFESTYLE book may help an elementary school student begin to develop good habits, BUT let your kid be a kid!
The main advantage is creating an awareness of 'organizing stuff to do.' Any hope of anything near adult-level skill application is an obsessive-compulsive parent's pipe-dream!
Recommendation: Consider only the Halfsize version. (If you purchase a Fullsize version for your child, you should be sent to your room to ponder your folly!)