The remaining Hilltop students were transferred to Mountain View and Northwood. Riverside Elementary was acquired during the consolidation of Riverside SD with Puyallup in 1962. It was closed due to its position on a floodplain, decreasing enrollment numbers, and unsustainability.
The Hilltop students who remained were moved to Mountain View and Northwood. In 1962, when Riverside SD merged with Puyallup, Riverside Elementary was absorbed because it was situated in a flood-prone area, had declining enrollment, and faced financial instability.