 Archaeological evidence associated with the earliest phases of European occupation of this site (early agricultural activities of the Agricultural and Horticultural Society's occupation of the site) would be of high State significance for its ability to provide information about a poorly documented and understood phase of Parramatta and NSW's history.However, such evidence would be fragmentary at best, if it survives at all.Archaeological evidence associated with the development and occupation of the King's School would also be of high State significance for its ability to provide information about a major institutional site over an extended period of time.