The fight over expansion plans for a charter school network that just got the go-ahead to open two more schools is heating up on Manhattan's Upper West Side. NY1's Lindsey Christ filed the following report.

They may be both the most popular schools in the city, and the most hated. They're the Harlem Success Academies, run by former City Councilwoman Eva Moskowitz. They boast high test score results and record breaking numbers of applicants. Yet every year, there are protests and complaints that these charters damage neighboring public schools.

The fight started in Harlem in 2006, moved to the Bronx last year, and is now heating up on the Upper West Side.

On Wednesday morning, the State University's board of trustees voted unanimously to let Success Academy open two more charters next fall. They'll be the eight and ninth charters in what's envisioned as an eventual network of 40 schools. One of the new schools is called Upper West Success, and it's already become very controversial in the community. One reason being the network wants the school to share a building on 101st Street already occupied by PS 145. There's space for 300 more students, but the charter school is eventually supposed to have 700.

"The DOE is saying they are going to place a 700 seat charter school -- which none of us want, no one wants. You can ask every parent association of the 32 schools in our district whether they want this. Placing it right in the middle," said Community Education Council 3 President Noah Gotbaum.

Moskowitz says the neighborhood doesn't have many options for parents, especially above 96th Street. She says the overcrowded schools prove there is a demand for more good ones to open. The application for Upper West Success was posted last week. The network says more than 50 families have already applied. But some worry that students the charter won't serve will be pushed aside.

"Eva doesn't educate all kids. She doesn't educate kids who have dedicated special needs," Gotbaum said.

"I’m not against charter schools but I’m against them coming into the building and limiting the space for the other kids," said PS 145 Parent Candice Atwell.

"It's already created a lot of animosity already. And it's very difficult to imagine a school coming in under those conditions," said PS 145 Teacher Samantha Deutsch.

Now that the school has been approved, the next step is to find a space for it. It's a process that involves more hearings. More fireworks are expected since community members say they plan to fight any plan that involves the charter school moving into a public school building.