Mayor Bill de Blasio is now the target of lawsuits by both sides on the issue of forcing schools to share space with other schools, including charters.
De Blasio announced last month that he was reversing some of the so-called co-locations approved last fall by Mayor Michael Bloomberg's administration.
He said he would let 36 go forward.
On Wednesday, the plaintiffs in a lawsuit seeking to overturn the co-locations filed a petition saying de Blasio should have rejected them all.
The plaintiffs including Public Advocate Letitia James said the decision to permit some co-locations was "capricious."
A de Blasio spokesman did not immediately comment.
Backers of the Success Academy charter schools have sued over de Blasio's decision to reject three of the chain's planned co-locations.