So is there evidence of this in states where cannabis access has been legal/decriminalized for at least a decade like California, Washington, and the Netherland

So is there evidence of this in states where cannabis access has been legal/decriminalized for at least a decade like California, Washington, and the Netherlands as a whole? It sounds like a significant portion of students from those states should be consistently underperforming each year compared to other states and to students before legal access was allowed.