The graduating class spent a week in June aboard the Tall Ship STV Pathfinder - followed immediately by a week-long canoe trip on the French River.
The challenges, they say, were all part of the adventure.
"Words can't describe it; it was really incredible," says Sasha Singer-Wilson. "I was really seasick on the boat, but I never thought, Oh, my God - I don't want to be here!' It was always I can get through this.'"
Devin Monajem, 14, has vivid memories of working the graveyard watch on the Pathfinder - in some pretty heavy weather. "The last day on the Tall Ship, we had a bit of a storm. The bowsprit was going under the water and it was just rocking. I had the 12-to-4 (a.m.) watch - it was brutal."
Classmate Alley Maczka-Adams also had a few tense moments in the middle of the night.
"I'm a diabetic, so it was kind of hard; I'd have to check my blood at 4 o'clock in the morning. But I was on this trip and I was having fun and I wasn't going to let anything stop me. It was just so cool," she says. "I could do it again for another two weeks."
Back on land, during the last week of school, the classmates pointed to the thrill of mastering something new.
"When the ship is rocking and rocking and you're up there pulling on all the lines and getting the sails down, it was really invigorating," recalls Catherine Thompson-Walsh. "You're doing something that helps the ship go and that was a lot of fun.
"When you overcome things it was like, Wow. I didn't think I could do that.' It's really inspiring."
Teacher John Bentley says the trip was all the more meaningful given the fact that Waldorf classes stay together through the years, and many in this group have been classmates since kindergarten.
"Not that some weren't homesick or desperately wet or sore. But they really wanted to continue the process that had just begun to crack - which was that they really began to know each other on a new and different level," he says.
"And knowing each other so well to begin with, that may sound strange. But suddenly they were able to mesh in a very deep way."