There may be a specific job that is available that would make your child feel more important and encourage him to want to go to school. Maybe he can be in charge of feeding and watering it each day. Ask how many items there are on the table. Then ask how many oranges, how many apples and how many cans of soup. If you feel your child's frustrations may stem from a learning disability, talk to the school about observation.
Most schools have either an in-house psychologist or one that visits the school regularly.
Ask to have your child observed while in class. Set up a time to discuss the results with your child's teacher. Should the results indicate a possible learning disability, be sure to consult your pediatrician for any medical or professional advice. Testing of ADD, ADHD and Dyslexia are now readily available to parents and educators. Find out what the problem is and try to help.