Child Soldier Prevention Act of 2007 - Defines "child soldier."
Prohibits, with a national interest waiver, funds appropriated or otherwise made available for specified military and related areas from being obligated or otherwise made available to the government of a country identified by the Department of State as having governmental armed forces or government supported armed groups, including paramilitaries, militias, or civil defense forces, that recruit or use child soldiers.
Directs the Secretary of State to notify any government so identified.
Authorizes the President to reinstate assistance upon certifying to Congress that a government is implementing: (1) compliance measures; and (2) mechanisms to prohibit future use of child soldiers and to ensure that no children are recruited, conscripted, or otherwise compelled to serve as child soldiers.
Authorizes the President to provide assistance to a country for international military education and training otherwise prohibited under this Act upon certifying to Congress that such assistance is for programs that implement measures to demobilize child soldiers and for programs to support professionalization of the military.