First teachers are not getting a raise they are getting a bonus. For it to be a raise the legislature when have had to indicate the additional money was going to be reoccurring and they didn’t.
Looking at the Florida BAT site some teachers are reporting their counties are trying to trade money for teachers giving up their continuing contracts. For the last two years all new hires have received one-year contracts that are or aren’t renewed annually. Before that, if you had worked long enough you were on a continuing contract, which boils down to teachers having work protections. For them if they are going to be let go there has to be a reason. New teachers have no such protections.