Number of people are there who have been using drugs and thus make it possible for them so that they can get addicted to them and thus because of which everyday number of drugs get banned in the world all around, there are number of such drugs, e.g. marijuana is one of them but also it is important to learn that there are number of drugs which can be proved to be useful for the people all around. Marijuana usage severely impairs their learning capabilities, critical thinking ability, and other related functions. These students are more likely to suffer from memory problems and difficulty in concentrating. There will be a decline in comprehension and cognitive skills. The effects are more drastic in case of regular users and those who take the drug in higher quantities. Due to these problems, they become irregular to school. It affects their academics and grades as well.There are number of blogs which can be useful in this and thus describing all of the important points that are related to drugs and their uses.