The application shall be on the official forms heretofore made part of this chapter and shall include a plot and drainage plan of the site, drawn to scale, indicating overall dimensions, topographical conditions, before and after, the location and intended use of existing and proposed buildings, locations of recreational areas, the relationships of the proposed use to streets and adjacent properties and such physical features as might present any deterrent to the protection of the health and safety of the pupils. The application shall include a complete set of architectural plans and a site plan showing existing and proposed buildings and structures. A statement shall be submitted, indicating the grade levels of the pupils to be housed in the building or buildings, the planned pupil capacity of such building or buildings and the contemplated eventual enrollment of the school.