School’s back in session this summer. But forget the No. 2 pencils and college-ruled binder paper, because these classes take place on the beach. Classes will be traveling through Austin, Corpus, Portland, Port Aransas, and Rockport all summer long, and while the 101s are for kids only, there are extensive public programs, including the Road Scholars adventure for folks over 55. Don't forget to check out the Estuary Explorium.