A different kind of note is going around Lois and Jerry Tarkanian Middle School.
This month, a lot of these yellow slips are going around the school. They're "you matter" notes.
One day a week students and teachers can write them. They're supposed to be kind word, something to help brighten your day if you're going through a hard time. There are also posters going up around the school that say "moments pass" and "please stay."
This is part of a growing conversation about preventing teen suicide.
Earlier this month the Clark County School District sent out a letter to parents about "13 Reasons Why." It's a show on Netflix depicting a girl who takes her own life. The district is encouraging parents to talk with their teens about the series.
Some students say getting one of these notes can change your day.
"It was from somebody that I especially didn't expect so it was actually really nice and it just makes you feel really good to know that somebody truly cares about you enough to send you a note," said Morgan Bastin, a student who received a note.
They've already sent hundreds of these notes out.