Tomorrow morning, Tuesday, May 18, 700 high school students will be attending the Northwest High School Film Festival which is being held at the Cinerama Theatre.  The students will be dropped off by half a dozen buses on Fourth Avenue in front of the theatre just north of Lenora Street between 9 a.m. and 10 a.m.   The students will board the buses after the festival between 1a.m. and 2 p.m.  Motorists can expect some congestion in the area during the hours when the students will be leaving and returning to the buses.