What is April Fools Day and how did it begin? Well, that is a very good question. The origin of this holiday is rather uncertain. However, the common belief holds that during the reformation of the calendar the date for the New Year was moved from April 1st to January 1st. During that time in history there was no television or radio so word spread slowly. There were also those who chose to simply ignore the change and those who merely forgot. These people were considered "fools" and invitations to non-existent parties and other practical jokes were played on them.
"All Fools' Day" is practiced in many parts of the world with practical jokes and sending people on a fool's errand. Others believe that the origin began with celebrations at the Spring Equinox.

My kids attend French school and they call it 'Poisson d'Avril'...translation:  April Fish?  They fool their friends by taping a paper fish to their friends' backs.  When someone discovers this trick, they yell...you guessed it..."Poisson d'Avril!"  I still don't get it but hey it works for them!  I wonder what tricks or gags some of you have up your sleeves?  Jokes and gags must be harmless and fun.  They must not be dangerous or hurt anyones feelings. Perhaps you can dress strangely on Friday or wear your hair in an unusual fashion!   I guess I will just have to wait and see.  Oh, yes, you do have a math test on April Fool's Day and it is NOT a trick (it is a real, report-card worthy test!).  Good luck and keep an eye on your backs!