sentences:  Studies show that afterschool programs are beneficial for both children and adolescents.A 1994 long-term study by Posner and Vandell found that children in structured, academic afterschool programs had increased academic achievement when compared to their peers.Researchers chose a pool of children who had taken part in some sort of after-school program and another pool of children who did not take part in a formal after-school program as a control group.