The Texas Legislature has not taken up the voucher question, but a Libertarian Texas policy group has been pushing it for years. Here are samples of their output:
TAX CREDITS FOR TEXAS SCHOOL SYSTEMS ALLOWS FOR HUGE SAVINGS
Notice the "Print Page" link at the very bottom. That will always print the current page.
"Defending New Hampshire Public Education" provides resources for citizens concerned about New Hampshire education.
The most interesting articles in each section are shown in the menu but there are normally many more articles under the main heading (except that all the New Hampshire legislation is shown). You can page down through those or just do a search to find what you are interested in.
The Search, in the upper right, is very powerful and worth using.
Texas (tax credit proposals)