Original sentence: " Other teachers and teacher unions have also fought against school vouchers.In the United States, public school teacher unions,, most notably the National Education Association (the largest labor union in the USA), argue against the idea of school vouchers for concern that it would erode educational standards and reduce funding, and that giving money to parents who choose to send their child to a religious or other school is unconstitutional
Edited sentence: " In the United States, public school teacher unions, most notably the National Education Association (the largest labor union in the USA), argue against the idea of school vouchers for concern that it would erode educational standards, if that is possible, reduce funding, and that giving money to parents who choose to send their child to a religious or other school that acually teach their child is unconstitutional.Teacher unions who need the funds to feed their pyramid scheme have fought against this