How do you find out if your record was expunged in state of pa?

Go to your local law enforcement agency (it's better if you're still in PA) and request a copy of your own criminal history. It's a public record and you're entitled to see it. It may cost a small administrative fee. What is shown on there is what any prospective employer will see. Note: It may depend on just how long ago the expunction was granted - it WILL take some time to clear the records - it doesn't happen instantaneously.