The researchers took a close look at self-reported marijuana use in the surveys among the students as well as survey responses in areas where medical or recreational marijuana was legalized.
The data showed that marijuana use among high schoolers was not statistically associated with medical marijuana laws, but there was a link with recreational marijuana laws.
"Because many recreational marijuana laws have been passed so recently, we do observe limited post-treatment data for some of these states," Anderson said.
Colorado legalized the adult use of recreational marijuana in 2014.
"Given the legalization, we need more education around marijuana or cannabis use for youth and we don't really have a lot of education."