>> reporter: and here is why miami dade is so important. this is the largest school district in the state. 3 34,000 students enrolled in this district. and they are now one of seven school districts moving forward with these mandates. jim, i can tell you in checking in with a few other districts there are others that as we speak are considering moving down the same path. >> understood, leyla good to have you there and seems a lot of parents support it. still to come this hour, president biden now says the u.s. troops may not leave afghanistan on that self-imposed deadline of august 31st. taliban responding those troops must be out by the end of the month. are we going to listen to them? later a spike in covid cases fueled by the delta variant has forced an entire texas school district into quarantine. will that make the state's governor change his mind on mask mandates? we'll see. or do the politics rule?