Clarification on scrimmages and practices please

High school coach isn't being real clear with communication so I am turning to the experts. Players can play in a preseason scrimmage and then compete in a club tournament? In the past you could play in unsanctioned games with no refs and then return to club play...but I am hearing the scrimmage will have refs??

Can a player still practice with the club team once high school games have started? I know they can't play games with the club but is practice against CIF?

Player will be...

Clarification on scrimmages and practices please