There are several passages in the new book “Overloaded and Underprepared” that fill me with sadness for American high school students, the most driven of whom are forever in search of a competitive edge. Some use stimulants like Adderall. Some cheat.

But the part of the book that somehow got to me most was about sleep.

It’s a prerequisite for healthy growth. It’s a linchpin of sanity. Before adulthood, a baseline amount is fundamental and nonnegotiable, or should be.

But many teenagers today are so hyped up and stressed out that they’re getting only a fraction of the rest they need. The book mentions a high school in Silicon Valley that brought in outside sleep experts, created a kind of sleep curriculum and trained students as “sleep ambassadors,” all to promote shut-eye.

The school even held a contest that asked students for sleep slogans. The winner: “Life is lousy when you’re drowsy.”