WASHINGTON — The White House says Vice President Joe Biden’s wife, Jill, will convene the first-ever White House summit on community colleges on Oct. 5. President Barack Obama wants the U.S. to lead the world in awarding college degrees by 2020, and he’s counting on community colleges to help meet that goal. The White House said Wednesday that the summit will provide a forum for community college administrators, business leaders, philanthropists, government officials and students to discuss how these schools can help the U.S. have the most educated work force in the world. Obama asked Jill Biden to organize the summit. She has taught at community colleges for the past 17 years and now teaches at one not far from the White House.