Concordia University Texas on May 9 will host attenders of the 15th annual Leadercast conference in Atlanta that will broadcast live to 600 sites in 40 nations.

Among Leadercast's guest speakers are former First Lady Laura Bush and Archbishop Desmond Tutu. University organizers said Leadercast is the world's largest convergence of leaders and is intended to change the way the world thinks about leadership in all sectors of life.

Melinda Brasher, associate vice president of communications, said about 250 conference attenders will fill Building A on Concordia's Austin campus. Some attenders will be Concordia students and other attenders are from Leander and Pflugerville public schools, Brasher said.

"We are very close to [being] sold out," she said. "We anticipate the event to be full by Friday."

John Adams, director of alumni relations, said in a statement that the conference is a way to recognize unique leaders, including conference host John Griffin, a Concordia graduate. Speakers also include clinical psychologist Dr. Henry Cloud, journalist and author Malcolm Gladwell, "Braveheart" screenwriter Randall Wallace and leadership author Andy Stanley.

In 2013 more than 100,000 people attended the conference in 14 countries, the university said.

Concordia organizers said the 2014 conference theme is "Beyond You," and speakers will focus on how leaders can use their influence for the sake of others. The event runs from 8 a.m.–3:30 p.m. Tickets cost $119 and admission includes a light breakfast and a lunch buffet.

Concordia University Texas is a private liberal arts university, part of the Concordia University System overseen by The Lutheran Church–Missouri Synod.