The School Building Committee earlier this month narrowed its focus on two possible options for elementary schools, which were presented to residents at a public forum Tuesday. One would renovate and expand the John B. Stanton Elementary, Moriarty Environmental Sciences Magnet and Uncas Elementary schools, each to house about 700 students in preschool through fifth grade. A second option would keep those three schools and build one new elementary school, with all four housing about 550 students each. As the committee was prepared to vote at its April 19 meeting to direct architectural firm Drummey Rosane Anderson Inc., or DRA Architects, to focus on the two possible scenarios, members decided to delay the vote until Tuesday’s public forum to hear residents’ input. The committee also looked at keeping all seven existing elementary school buildings with about 300 students each. The committee hopes to present a proposed plan to overhaul the city’s schools to the City Council for approval and be ready in time to place a referendum question on the ballot for the Nov. 8 election. But committee members said Tuesday the group likely will not be ready in time to meet that goal.