A citywide special education plan that aims to put New York City more in step with other school districts around the country by including those students in general education classrooms is causing commotion here, with a growing chorus of parents, teachers and elected officials insisting it is being too hastily implemented with too little information.

Laura Rodriguez, the deputy chancellor for students with disabilities and English language learners, stepped down on Monday. In a news release, the Department of Education announced that Ms. Rodriguez will be replaced by Corinne Rello-Anselmi as of July 1.

Former school teachers and principals, political aides and the spokeswoman for two Congressional leaders are among the people in Chancellor Dennis M. Walcott’s cabinet.