A judge yesterday dealt another blow to Mayor Bloomberg’s plan to fix 24 failing public schools by closing them, replacing half their staffs and reopening them with new staffs.

Manhattan Supreme Court Judge Joan Lobis denied the city’s request for a temporary injunction.

“I’m not going to jump in at this point,” Lobis said.

City attorney Maxwell Leighton said the arbitrator’s ruling, if it stands, will hurt the mayor’s plan to reform failing schools.

“We would find ourselves in a position where we would not be able to give the schools the help they so desperately need,” he said.