Twenty years ago, during the Bloomberg administration, Chancellor Joel Klein ushered in the era of balanced literacy at city schools, until a lack of progress led him to pilot other approaches. Years later, another chancellor, Carmen Fariña, a believer in independent reading time and having students choose their own books, again encouraged schools to adopt those strategies.

Richard Carranza called the city’s patchwork of practices unfeasible when he led the system, but his tenure overlapped with the first year of the pandemic and reading moved to the back burner.

Mr. Banks, and the mayor, Eric Adams, who has dyslexia, has said reading would be one of the top priorities for the administration. Already, Mr. Banks has required schools to adopt phonics programs and opened several new programs for students with dyslexia.

Teacher training on the new programs will begin this week and continue over the summer, and coaching will continue during the school year. The goal is for teachers to return in the fall with their first unit fully planned, officials said. Early childhood providers will also receive training in the coming months.

The first stage of rollout will include several areas where children have struggled most, such as Harlem (District 5), the northeast Bronx (12), East New York (19) Brownsville (23) and southeast Queens (32).