So glad you asked.
1. It's great practice for the actual ACT/SAT
2. It can connect you to colleges you may not have considered (ask me about the summer my nephew spent at HARVARD because of his PSAT score!)
3. It helps you gain access to scholarships available only to students who have taken the PSAT. Did you know those even exist? Yeah. They do.
And finally...IT'S CHEAP! Haha. $16 is a real bargain, Pirates.
Go to the bookkeeper's window and pay for the PSAT by October 8th!