An educational institution below college level must contain at least five acres of land and no structure shall be erected nearer to any property line than 50 feet. Buildings will not occupy more than 25% of the total lot area, and all other requirements as set forth in this chapter for the zone in which the use is to be located must be complied with. The applicant must prove that such use will in no way be detrimental to the surrounding property values and that the proposed use is within the intent and purpose of the zone plan of the Township.