According to research studies they said. It was really some statistics from a survey, not scientific research. They said only some of the teens who smoke marijuana have a decrease in their test scores. Not all of them. Marijuana is not to blame.
These kids have been pulled into marijuana by other pot smoking kids. Those pot smoking kids of a rebel like attitude. They are against school and the government rule over them. They gave the new pot smoker those attitudes and ideas. It was trained behavior that messed up their test scores.
Now that the new marijuana smoking has left school, he's in rebellion against the government and people who try and control him, who does other drugs. Again, marijuana is not too blame for this, it was the ideas, the trained behavior that caused it too happen.
The devil is to blame, not marijuana.