<p>Many community colleges ( and colleges) have freshman level chemistry and physics classes with laboratory over the summer and might allow him to enroll as a visiting student. I think this could count as dual enrollment ( and not change his status as a freshman applicant- but would likely need to be approved by his school for this). The problem would be finding a place to live- but if he had family or friends who would house him for the summer, that might be doable.</p>