Not every parent is a fan of the app.
"I just don't like the anonymous factor of the app. It's what I would consider the biggest negative of the app," said Heather Pendergrass Hughes.
Hughes is a teacher and parent of a middle schooler.
Sarahah lets people sign-up with a username. People can share their username on Facebook or Twitter. Anyone can leave a message for you once they know your username.
There is no minimum age requirement for the app.
"Just keep a very close eye on what websites and what apps your children are using," said Hughes.
If a student gets a hurtful message, school officials tell parents to act immediately.
"Screen shot it, don't delete it. Show an adult, your parent, guardian," said Hazard Middle School Principal Kevin Combs.
Combs said to let to let either the school or police know when a child is bullied in any way.
"A lot of times you've got to go through the negative stuff to teach kids what's appropriate and what's not appropriate," said Combs.
Combs said he wants people to focus on the positive and negative of social media. He said talking to your kids can also prevent bullying.