While trying drugs and alcohol might not have occurred to you until seeing all these messages from authority figures in school, many kids do get exposed to drugs and drug opportunities outside of the classroom, including on the internet. School systems know this, and figure that they had better equip you with knowledge about the risks of trying drugs and alcohol--to counter some of the misinformation that you might pick up elsewhere. However, your point is very important, and this is why we try hard to make our messages "age-appropriate" so as to maximize the usefulness of the information while minimizing the likelihood of its misuse.