Report card time. How do I stop it from being mailed to our house?

K I should rephrase this. The school mails out report cards and all I want to do is stop it from getting to my mom. I'm at school when the mail comes and but I'm not positive what exact time it comes. It used to come a half an hour after I got home (around 4). But this past week it's always been coming when I was at school. Except Friday. But I just want to get it so my mom won't see it. Can I call the post office and ask them if I can pick up my mail there. Idk pls help. Maybe I could sluff a cl idk. When does mail usually get to you after it has Been sent. Is there a web sitethat tells me what time the mail man comes. Idk. Pls help. I live in Ammon Idaho. The best I will go in depth for you is I live on Ross street