Background
The controversial school voucher issue (This is a lesson plan, but it offers a good way to think through the main arguments)
Education Week articles about school choice. There are many articles here, but registration is required and free article access is only available for two weeks.
Can competition really improve schools?
Pro
A win-win solution: The empirical evidence on school choice. If you read one report on the benefits of school choice, you should read this one.
Non-gated national level studies
The five biggest myths about school vouchers