An announcement for President Obama's first Tumblr Q&A was introduced June 5, 2014 on the White House Blog. - 

On Monday, President Barack Obama signed an executive order that will help up to 5 million people pay off their student loans. He also pushed congress to lower borrowing costs for college kids.

Now, he's taking to Tumblr for the first time, to talk education.

It’s another chance for him to shine a light on the unsustainable cost of college.

It's also another chance to point out how comfortable he is with social media.

President Obama has participated in an Ask Me Anything on Reddit, a town hall meeting on Twitter, and even the online faux talk show “Between Two Ferns” to plug the Affordable Care Act.

“I wouldn’t give him an A on all the things in his presidency,” says Dave Kerpen, social media expert and cofounder of Likeable Media. “But on social media, I’d actually give the president an A.”

Tumblr, say experts, is exactly the right place to talk school costs. “It’s most popular with people under the age of 30,” said Mark Schafer, author of “Social Media Explained.”

It’s a direct line to a generation facing a trillion dollars in student debt, not to mention an indirect line to congress to put the pressure on.

Follow Adriene Hill at @adrienehill