Guess who’s coming to Detroit on Friday to be with First Lady Michelle Obama, and encourage young people get a college education?

Jim Harbaugh, University of Michigan head football coach, who hasn’t even coached his first game and already is enjoying epic popularity.

Obama is making her fourth Detroit visit at Wayne State University for the city’s first-ever College Signing Day. Over 2,000 students from 40 Detroit high schools will participate in the event at Wayne State University, hosted by the Detroit College Access Network at WSU.

Joining Obama and Harbaugh will be Ciara, Grammy-award wining recording artist and long-time education advocate.

Obama’s visit with Ciara was announced earlier this week. But Harbaugh wasn’t announced until late Thursday.

Nina Bailey, a spokeswoman with Excellent Schools Detroit, didn’t know how Harbaugh got in the speaking lineup.

And Harbaugh — who is normally a prolific tweeter with almost 255,000 followers — hadn’t said anything late Thursday about his appearance with the First Lady on Twitter.

A former UM quarterback, Harbaugh took over at Michigan earlier this year after four years as coach of the San Francisco 49ers. He has an enormous following, as he comes across as an all-American guy, often clad in discount khakis.

Obama will stress the importance of young people pursuing and finishing some avenue of higher education.

This is one of the most important issues in Detroit, which has one the lowest rates for college attendance in Michigan. Additionally, the state lags in graduation rates, with only about half of the 300,000 students who enroll in the 15 public universities graduating in six years. The national average is 59 percent.

Besides Obama’s event in Detroit, 600 other College Signing Day events are planned across the nation, with Education Secretary Arne Duncan attending an event in Washington, D.C., and Housing and Urban Development Secretary Julian Castro at an event in Austin, Tex.

Follow the event on twitter with the hastag, #ReachHigher, and tweets from @MichelleObama, @CoachJim4UM, @ReachHigher, @ArneDuncan and @SecretaryCastro.

On Instagram, follow @MichelleObama and @ReachHigher2020.