A view of the approved addition to Lowell School, seen on the right, which has tall windows, including on the corners. The designs of Watertown’s three elementary school projects solidified Wednesday night, with the School Building Committee selecting its preferred options for Lowell School, and they got previews of the two new schools at Hosmer and Cunniff. While the Hosmer and Cunniff schools will get brand new schools, Lowell School will undergo a major renovation, plus a large addition will be made to the east side of the building. This area will include the library/media center. The look of the addition to the Lowell School was the big sticking point at the Committee’s previous meeting, with members splitting evenly over the two choices.