Two Brooklyn Success Academy charter schools are suing the city to fight for space for pre-K classes.

The Cobble Hill and Williamsburg schools are looking to add pre-K programs.

Both schools are co-located within public school buildings and would just need one additional room.

Success Academy says the city is denying their request even though there's ample space available.

They say the city's decision undermines Mayor Bill de Blasio's plan to expand pre-K and ignores the high demand from the community.

But education officials tell us the city has not approved or denied any applications yet.

In a statement, a spokesperson for the Department of Education says, "We are in the midst of reviewing applications for pre-K programs and will award programs soon. We’ve actively solicited charter school submissions and welcome their participation in Pre-K for All."

A state law requires the city to fund classrooms for new or growing charter schools.

The city says the law defines charter school pre-Ks as separate programs, not as extensions of the schools. 

A total of 13 charter schools applied to open pre-K programs.