Reply back with disagreement

You've got that backwards. All the studies say HS students need morning sleep the most. And an 0730 start, requiring an 0700 bus and an 0600 wake-up is too goldurn early.

I disagree. Studies show that teenagers actually need more sleep in the morning, so starting school later would be beneficial for their health and well-being. Starting school so early is not conducive to their natural sleep patterns.