https://www.drugs.com/cg/school-phobia.html
School phobia (fo-b-uh) is when your child is very nervous and refuses to go to school. It is also called school avoidance (uh-voy-dunts). A phobia is a strong fear of something for no obvious reason. Phobias can cause very bad anxiety or panic attacks. School phobias are common when children start school between 5 to 7 years of age. But, adolescents (teenagers) can also have school phobia. School phobia sometimes starts after a child has been absent from school for a vacation or an illness.
This fear of going to school can be very stressful for your child and for you. But, school phobia can be treated successfully. School phobia can cause anxiety or depression later in life.