How is it directing more resources to allow students to take courses at their level? It's not like you have to pay high school math teachers a higher salary to

How is it directing more resources to allow students to take courses at their level? It's not like you have to pay high school math teachers a higher salary to teach calculus. Your typical public high school in California has 1,000+ students. With that many students it's not going to be hard to find 20-30 students to register for a calculus class. It's not like you're running a special private class just for a few gifted students.