To help your child move towards this type of motivation, let your child know that you think school is important. Praise them and provide rewards for both trying hard and for being successful in a variety of activities and interests, not just schoolwork. All children need to know when they are doing well.
Teach your child habits that encourage learning, such as having a routine for schoolwork. Your child should know when he or she is expected to work on schoolwork each day. Set up a quiet place for your child to study where he or she has all the supplies needed. Make sure that your child finishes homework and studying before doing things that could distract them such as watching TV or playing video games. Be available to supervise and help your child with homework and studying. If needed, increase the amount of time your child studies by a small amount each day until your child is spending the amount of time needed to learn well.
Reference: Academic Motivation for Students by Michael B. Brown, National Association of School Psychologists