The Quran doesn't have a clear set of ten commandments in it. There are verses that together, scattered through it, might parallel the ten commandments, but no one verse or two does that.
I see no harm however in quoting some religious text or another, be it Christian, Islamic, Buddhist, or whatever where the quote conveys what virtually anyone would consider good values, like You cannot commit murder. Foisting heavy doses of any religion on schools should be avoided. There are religious schools for those parents that want their children to grow up in that environment, and we should have that choice too.