This bulletin board is behind my desk since I am the only one who changes the jobs. I move the fish weekly. Each fish has the students assigned number (given to them at the beginning of the year in ABC order. If a student drops then that number will not be filled unless a student is enrolled.) The fish are also laminated, so I am able to add their names with a Dry Erase Marker. I use paper clips to move the fish and Velcro the paperclips to the cloth. Surprisingly, the Velcro has held for over two years.