Now we know why Sasha Obama skipped dad's farewell address

Where in the world was President Barack Obama's youngest daughter Sasha during his farewell address Tuesday night in Chicago?

Well, now we know.

A White House official confirmed that Sasha was at home in Washington, D.C., studying for a school exam the next day. Though Sasha was not there in person, President Obama still gave a touching tribute to both his daughters during his speech.

Read the full story from FoxNews.com here.