[LRZ]

Pay PIAA $30 and they will send you the high school rulebook (NF = National Federation of High Schools); take and pass the PIAA exam (given several times a year, February, June, October); then join a local chapter, where you can connect with assigners. There are twelve PIAA chapters in and around the Philadelphia area. Assigners generally assign school and recreational games; my guess is you will have to work your way up and start with kids/middle school (ages 12-14 or so). Usually, you need PIAA certification to ref non-school/rec leagues games.

PHiladelphia is surrounded by four suburban counties, and there are many schools and recreational leagues around. I belong to the Abington PIAA chapter, meeting in one of the suburbs. Depending on where you live, you should have ample opportunity to work, but you will probably want to limit your driving. Moving up is very much a political game, around here.

When you arrive in the US and get settled, PM me if you like. We can talk and I can perhaps offer more appropriate guidance for you. --Roy