“Avalon High,” a new Disney Channel Original Movie that puts a contemporary twist on Arthurian legend, premieres FRIDAY, NOVEMBER 12 (8:00 p.m., ET/PT) on Disney Channel and Disney Mobile for Sprint TV, MobiTV and Flo TV. Starring Britt Robertson (“Life Unexpected”), Gregg Sulkin (“Wizards of Waverly Place,” Disney Channel UK’s “As the Bell Rings”) and …



