Now that the Nevada State Education Association has submitted a petition to Secretary of State Ross Miller's office that would increase the gaming tax on our biggest casinos (those making more than $1 million a month in gaming revenue) by 3%, you fine citizens may have a choice to make.  Do you bite the hand that feeds so many Nevadans by signing the petition (and maybe eventually voting on it), or do you say "Sorry, kids and teachers, this isn't the way to make things better for you?"   The petition would use the money raised (which could be as much as $400 million in new revenue a year) to add school days, decrease class size, train teachers, increase salaries and benefits for both teachers and administrators and create an incentive program for teachers.  All worthy goals no doubt, but now that Nevada is working to diversify it's economy, can we ask just the gaming industry to step up to the plate?  Terri Lanni was right.  The MGM Mirage Chairman and CEO predicted that initiatives would balance the budget if the Governor couldn't look at a more diverse tax base.