70s Style Rock Auction benefits Martha's Vineyard Public Charter School. Disco dance party with auction items such as a weekend in New York city, Outermost Inn overnight and Nancy Aronie writing workshop. Admission $15. Auction at 7 p.m. at Dreamland in Oak Bluffs with dancing to 70s tunes from 9:30 to 11 p.m. Call 508-693-9900.