Councilman Ben Kallos is expected to introduce a bill on Wednesday that would require the Education Department to release additional data such as the number of applications each school receives, how many offers it extends and where students live. Credit Emon Hassan for The New York Times

Mr. Kallos said that his constituents routinely complain of being turned away from nearby prekindergarten classrooms or gifted and talented programs, for which they have qualified, because there is not enough room.

This legislation would show where students end up when they leave their neighborhoods to attend school, as many do. Mr. Kallos said that most elementary schools in his district were populated with students from the area, but at Ella Baker School, at 317 East 67th Street, which serves students from prekindergarten through eighth grade, most of the students are from elsewhere.