Foster Care Update

My student is now MIA. He goes into foster care and never comes out? What the heck? I don't understand the transition into foster care at all. I just wish that this student could have stayed with me until his foster parent had a chance to do things like buy uniforms and figure out how he/she was going to get him back and forth from school. Another frustrating part of this situation is that nobody can get me in contact with the foster family. As a teacher you have to have a good relationship with the parents, and I assume this is doubly true when applied to a foster family. Please help if you know what my next steps should be.