School desk Portends a change of status in the near future.
Writing If you are writing something in your dream, this dream marks your communication with a person or even with your inner world. You are writing something important so it means that you want to find the solution of a problem that you have done.
Writing To dream of writing a letter means message, note, etc. It also indicates prosperity and great economic achievements.
Writing To dream of yourself writing a letter, a note, a message, etc., indicates prosperity and great economic achievements. On the other hand, it means your some kind of communication with someone.