Blake Farmer

Ninety percent of students at Hobgood Elementary in Murfreesboro, Tenn., come from low-income households. Most of the school's teachers don't. And that's a challenge, says principal Tammy Garrett.

"If you only know middle-class families, you may not understand at times why they don't have their homework or why they're tired," Garrett says.

"Chow bus! Chow bus! Chow bus!" chants Gunner Fischer, 3, as a custom-painted school bus rounds the corner and rumbles toward his apartment complex in Murfreesboro, Tenn.

About 21 million students nationwide eat free and reduced-price meals throughout the school year, but getting those same kids fed during the summer is a challenge. Only a fraction of those make it to schools or community centers for summer meals.

A stack of research suggests that all the classroom technology in the world can't compare to the power of a great teacher. And, since we haven't yet figured out how to clone our best teachers, a few schools around the country are trying something like it: Stretching them across multiple classrooms.

Leaders of the country's largest Protestant denomination have a message for millennials: get married already.

The Nashville-based Southern Baptist Convention and its nearly 16 million members continue to resist societal trends like gay marriage and cohabitation. They also want to go against the grain on the rising marital age.

But back in 1972, Pam Blume was pretty typical. She was just a few years out of high school when she walked down the aisle.

It's Saturday in East Nashville, Tenn., and LaTonya White finds herself knocking on a stranger's door. It's awkward. Someone peers out at her through the window. White looks away, pretending not to notice. After an uncomfortable few seconds, the door finally cracks open. White seizes her chance:

"My name is LaTonya White. I'm the principal at Rosebank Elementary School. How are you doing?" she asks, glancing at the clipboard in her hands. On it: a list of families in the area with soon-to-be kindergartners. "Yes, you should have a child ready to come to school soon."