TAMPA — With one dissenting vote, the Hillsborough County School Board approved a property tax increase and a $2.85-billion budget for the 2011-2012 year. An increase in the tax rate was required to qualify for state education funds, said Superintendent MaryEllen Elia in explaining the need to raise the rate to just over $7.91 per $1,000 in value, up from $7.59. For a $200,000 house with a $25,000 homestead exemption, that amounts to $1,384, or a difference of about $56. The vote was 5-1. Member April Griffin was absent and Stacy White voted no. White left the meeting without explaining his vote and could not be reached for comment.