Only students having federal student loans have the right for government student loan consolidation. The student should have more than one federal student loan otherwise he or she just do not need the consolidation. Beside that students must be in good standing with their loans. That means the student must either still be in his or her six-month post-graduate grace period or have made three full monthly payments on time for each of the loans being consolidated.
     Talking about subsidized and unsubsidized student loans, both of them can be consolidated. However, they will be consolidated in two separate loans in order lenders can monitor them separately which is required by law. Despite that fact, the payments for those loans will be combined so the student still has only one payment per month.