Can I claim my home as my office if I am an independent contractor?

I will be working as an independent contractor next year for a school district in Texas. The commute from my home will be far and I was wondering if I could claim mileage if I make my home my office. I feel that I could make a room in my home an office but I’m not sure if it qualifies as the principal place that I conduct business. I will be going to multiple school sites per week.