Parents said data shows two-thirds of Success Academy charter schools are under-enrolled.
The charter network is planning to open new schools in Manhattan, Brooklyn, Queens and The Bronx.
Success Academy has submitted a proposal to create charter schools in Districts 2 and 3.
The charters include a school for boys and one that teaches kindergartners a new language.
The PROSE schools will offer a variety of changes to curriculum and school structure, officials said.
The city paid hundreds of contract workers to clear classrooms for Eva Moskowitz's charter chain.
The charter network applied for 14 new schools in Brooklyn, Manhattan, The Bronx and Queens.
Charters shouldn't be able to take space needed by badly crowded district schools, protesters said.
The trustees at Bronx Prep Charter School voted to put it under the management of Democracy Prep.
Harlem Success Academy is trying to take over classrooms at Frederick Douglass Academy II.
During a roundtable on the state budget, the mayor said colocations were still the city's decision.
The mayor claimed victory after Albany passed a budget with $300 million per year in UPK funding.
Growing Up Green Charter School, founded by Matthew Greenberg, will expand to a middle school next year.
Parents from Eva Moskowitz's Success Academy charter schools sued Mayor Bill de Blasio.
Moskowitz fought back after the city blocked a plan to co-locate three Success Academy schools.
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