Helena High School Helena High School Helena High School is a public high school for grades 9 through 12 located in Helena, Montana. It is part of the Helena Public School District. Founded in September 1876, it is the oldest high school in the state of Montana. A new building was completed in August 1935 and it was almost destroyed a few months later in the 1935 Helena earthquake. In 1955, the building became Helena Junior High School (now Helena Middle School) and Helena High School moved into its present location at 1300 Billings Avenue, just off Montana Avenue. Four foreign languages are
Helena River catchment Nyaania Creek and on the southern side Piesse Brook are significant in their moving through built up areas which makes them susceptible to urban environment issues. Upper Helena catchment (i.e. above Mundaring Weir) has on the north side of Lake C.Y. O'Connor (formerly the Helena River Reservoir) a range of named creeks that occur in State Forest no 71 and 13: In the higher ground the Helena River passes mainly through State Forest or reserve. This has been beneficial for some of the catchment area, as it has been an important buffer between the urban settlements in the Mundaring