This varies based on your state and sometime the school district. so best thing to do it check with your school district for the exact date. it ranges between mid August and the second week on September (after labor day)
Depends on the school. Why don’t you just go there or make a phone call. How can we know. One time is clear: very soon. I do not want it to start so badly as I had not have a chance to get a proper rest. And not the school begins so soon. By the way, if you need good recourses, just go the web page in the recourse box. Anyways, have a good back to school time and enjoy whatever you have left from summer 2015!