Following the very recent video where a teacher is seen beating his students (a common occurrence at schools) TBWA\Raad\Lebanon came out with this initiative. Apparently it is a hotline to call if such an aggression happens. What is written on the board is "teacher x student" except the multiplication sign in Arabic is "darb" or "beating". And the selling line goes "beating (or x) at schools should not go beyond numbers).
The initiative is very laudable, but since Beirut/NTSC is a media critique blog I'd like to point out that the "darb" (as a double entendre on multiplication and beating has been done very recently in an ABAAD ad which you can find here.