I remember doing something similar to this as a kid.  When I went to Thruston Elementary we had some sort of balloon release.  I vaguely remember attaching index cards to balloons and sending them off into the air for some reason or another (maybe to find a pen pal?).  Wednesday, Country Heights had a balloon launch of their own.  Teachers encouraged students to set goals for the upcoming school year and "attach" them to the balloons.  Then, everyone gathered in front of the school to set those goals free and lift them into the air to achieve new heights.  Check it out!