My 12-year-old son carried his wheelchair-bound friend on his back during a camping trip so he wouldn’t feel excluded—then the next day, the principal called me and said, “You need to come to school right away.”

He nodded.

Sam has been Leo’s best friend since third grade. He’s smart, quick-witted, but much of his life has been spent watching from the sidelines or being left out because he’s been in a wheelchair since birth.

“They said the trail’s too hard for Sam,” Leo added.

“And what did you say?”

Leo shrugged. “Nothing. But it’s not fair.”

I thought that was the end of it.

I was wrong.