Almost every day there’s a new proposed state or federal law to legalize marijuana, and each one raises more and more questions on the subject. And so, more studies. One recently released looked at how pot affects the academic performance of students.

The authors of the report looked at a town in the Netherlands which has enacted a law that basically bars those who don’t have proof of their residency from accessing marijuana in local coffee shops. This was done to try and cut down the amount of tourism that might come from foreigners who want to try the drug.

Researchers in London studied students in the town who have access to weed and a study on those who don’t. The study collected data from over 54,000 students and the test found that the starkest changes were found in maths, and this supports the evidence that weed may in fact impede math skills.

Should we be concerned about the fact that pot is going to destroy our academics? Randy Cohen, former ethicist at The New York Times, doesn’t think so.  “Even if that were true,” he told VICE, “it’s just one more factor to be considered in the legalization of marijuana.”

Cohn also said that lowering tuition rates could affect test scores the same way as those who access pot. Dr. Greg Eells, director of counseling and psychological Services at Cornell University, also stated that alcohol consumption is rampant on college campuses, and this most likely has a negative effect on performance as well.

Taking this into consideration, weed, low tuition fees and alcohol could all affect academics, but the question of this is far too complicated to be reduced to a single contributing factor.