You don't need to look it up. Didaskaleinophobia is the fear of going to school. Chances are, the children you know may be reluctant about going back to school, but 'round the world, only 2.4% of children actually have this phobia.
However, you may know a truculent teen who argues that high school is a waste of time. If so, don't let him (or her) know that high school didn't even exist until the 1930s. It was started during the Great Depression to keep teenagers in school and out of the workforce so more adults with families could get jobs.
What was your excuse to skip school?