When Zohran Mamdani served in the New York State Assembly, he voted for a plan to hire more teachers and build more classrooms in New York City to keep class sizes small. As mayor, Mamdani has other priorities. Mamdani’s 2027 budget, which he unveiled last week, includes $122 million for new teachers and $1.5 billion for classroom construction. That may seem like a sizable investment — but according to New York City Comptroller Brad Lander, this…