"Starting September 1 I will run the Sciences-Po international affairs school in Paris and I will step down from my functions as an MP," he said on Italian public TV.
"I will not be stepping down from politics, but from parliament," he added yesterday.
Letta led Italy's government for 10 months, but was pushed to resign in February 2014 by current Prime Minister Matteo Renzi amid political and economic crisis.
Sciences-Po's Paris School of International Affairs, created in 2010, "offers a cutting-edge education to tomorrow's leaders in international affairs," according to the school's website.
