God lavishes grace upon the entire world - believers and unbelievers alike - and we call this "common grace". We know that God establishes all authority to include all governmental authority even if we disagree with that authority politically (Romans 13:1-7). That is part of God's common grace to all people to help ensure peace and an orderly environment. Certainly some of those governmental authorities rebel against God and abuse their authority and when that happens we should speak God's truth to them and hold them accountable to His word. But we should also acknowledge when they speak and govern in a way that reflects God's common grace and glory. To that end the President's speech to public school students today deserves recognition as an example of God's common grace.
His speech http://www.whitehouse.gov/MediaResources/PreparedSchoolRemarks/ is excellent as far as it goes. It would be best to exhort students to Christ...but short of that, in the parameters of God's common grace and function of the governing authorities, it is excellent advice from the President of the United States. I pray that all students and parents take it to heart. We can debate the appropriateness of the President making a speech to public school students (whether it is President George H.W. Busch or Barack Obama) but from a Christian world view perspective the content of the speech is good and commendable.