State Comptroller Don Huffines has refused to answer public-information requests about how millions of dollars in state funds have been distributed to private schools and vendors under the $1 billion school voucher program, the Austin American- Statesman reported.

Huffines' office has said concerns about student privacy and the state's history of not providing information on private schools justify keeping the voucher spending secret.

The Comptroller's Office released a list of more than 2,700 schools approved to participate in the voucher program and a list of nearly 2,200 approved vendors, but it did not disclose how much money each has received.