You can talk to people at www.nami.org They can talk to you but you're best to talk to someone about it, trust me it's not to be embarrassed about.
I have multiple personalities, and I hear voices. I go to a psychiatrist, yet I'm too scared to ask my parents for a schizophrenia test/assessment/diagnosis... any help?
Actually, you don't need to talk to your parents about this, you need to talk to your psychiatrist about this as he/she is the one who would diagnose you with schizophrenia. You could write down any questions that you have and the next time you have an appointment for therapy, ask your psychiatrist about them.