No, she would not qualify for in-state tuition in Texas because TNs/TDs are considered nonimmigrant visa classifications and do not permit the holder "to domicile in the US." However, H-1Bs and their dependents do qualify for in-state tuition, at least in Texas.
I don't have enough posts to post links yet, but the International Students site of the University of North Texas has some information on residency tuition for non-citizens living in Texas. You could also visit the Texas Higher Education Coordinating Board (THECB) site for additional information.
tax_maestro wrote:I have been working in Texas on TN for last three years. My wife will be joining me shortly. She wants to complete her education in a university. I am just wondering if she will qualify for in-state tuition by virtue of the fact that she is a spouse of a person who has lived and worked in Texas for more than 12 months?
I know some states allow H-1s and TNs to be considered for residency but not sure about Texas.