Also, a study in the "journal of Drugs: Education, Prevention & Policy" discusses alcohol and drug prevention programs in Australia for students in grades 8 and 9. It goes into detail about the student's between 13 and 15 years old, to see if alcohol and drug prevention programs have an actual effect on preventing substance abuse. The study comes to the conclusion that when the students went through a drug and alcohol prevention program, they were less likely to develop a drug or alcohol problem.