The ‘Revolution bell’ will be sounded today in all schools nationwide at 9:30 am to mark the return of Imam Khomeini from exile in Paris on February 1,1979.Culture deputy at the ministry of education said several other ceremonies will be launched in schools to concelebrate the anniversary of the Islamic Revolution. Mehdi Aliakbarzadeh quoted by ISNA said decorating schools, hoisting the Iranian flag and forming a 1357-strong choral group is among the programs to be launched by the education department.