* Safety concerns: Bullying, violence, and drug use.
* Academic concerns: Dissatisfaction with the curriculum, teaching methods, or pace of learning. A perceived lack of individualized attention is a major component of this.
* Moral or religious objections: Disagreement with the school's values, policies, or curriculum regarding sex education, religious instruction, or other moral issues.
While other reasons like a desire for individualized learning or special needs are significant, the umbrella of "concerns about the school environment" tends to encompass the largest number of homeschooling families.