Welcome to the Room 222 episode guide at TV Tome. This show premiered on Wednesday, September 17, 1969 and the last episode aired on Friday, January 11, 1974. Most, if not all, of the 113 episodes produced were filmed on location at Los Angeles High School in Los Angeles, California. Some scenes were filmed at 20th Century Fox studios in Hollywood. This show never ranked above #25 in the Nielsen Ratings. Here is a list of time slots held by Room 222 during its 4 year run: September 17, 1969 to January 13, 1971: Wednesdays from 8:30 P.M. to 9:00 P.M. January 20, 1971 to September 8, 1971: Wednesdays from 8:00 P.M. to 8:30 P.M. September 17, 1971 to January 11, 1974: Fridays from 9:00 P.M. to 9:30 P.M. In the 1969-70 season, Room 222 won an Emmy Award for Outstanding New Series.moreless