It's fascinating see where everyone from your graduating class ends up. Some stories go down dark tragic paths, and others shoot into near unrecognizable fame, most of us fall somewhere in the middle.
And while schadenfreude can be a delicious tonic in some cases, it generally feels toxic and depressing to take joy in the downfall of people you came up with.
On the contrary, watching acquaintances become rich and famous can be equal parts wonderful and awful, depending on what they were like. Some famous people stay grounded and true to their roots through it all, while others are eager to throw off the shackles of their past.
In a popular Reddit thread, teachers and students who came up with famous (and infamous) people shared what they were like before the money and flashing lights.
In Maine, Stephen King was my both my mom and my dad's English teacher in high school. Pretty much what you suspect; quiet and restrained teacher. From what I've heard about him though, he would apparently go off on huge tirades about why the state of Maine should be wiped off the face of the earth.