Two of my favourite times to pray are when I walk my dog in the morning and when I'm in the car. It's a great way to start the day. Mark 1:35 says, Very early in the morning, while it was still dark, Jesus got up, left the house and went off to a solitary place, where he prayed. Perhaps you need to set your alarm ten minutes earlier to allow yourself time to pray. Fevr.net has an article on three things to pray before going to school. In summary they are:
Short and sweet inspirations for Christian teen girls.