Why is the left opposed to school choice?

[ElectionsGuy]

Why does the left not favor scholarships or vouchers? Why are they insistent on keeping kids in public schools that are failing? They don't want private or charter schools to exist, despite them doing better than public schools. If they care about the poor so much, they should want poorer kids who generally go to worse off schools to go to better ones, increasing their chance of not being poor in the future.

If I had to guess, I would say its because they're (and by they I mean left wing organizations and big money) a puppet for labor and teacher's unions.

[ElectionsGuy]

All schools should be the same. If we're in a situation where choice matters, we're doing something wrong.

If all schools are the same, how do we find out which methods of schooling are most effective? One of the benefits of school choice is identifying the most successful methods of learning and advancing education.