A federal judge on Thursday dismissed a lawsuit brought by students from Purdue Academy, a charter school that was shuttered after a teacher was found dead of natural causes.

In a decision issued Thursday, U.S. District Judge Charles Breyer ruled that the lawsuit, brought by parents of students who attended the private school from 2012 to 2014, lacked merit and that the district’s decision to shut down the charter school violated the Constitution’s equal protection clause.

The lawsuit, filed in 2015, alleged that Purdue’s charter schools were poorly equipped to handle the growing number of students in the district and that teachers were poorly trained to teach the subject.

It also alleged that the school did not have proper training in critical thinking and critical thinking skills.

Purdue closed its doors in 2014 after teachers at the school, which is run by Purdue parent-teacher partnership, were found dead in their dormitory in April.

The parents of more than 30 students at the private boarding school had been demanding answers for why the school was shut down.

The lawsuit said that Purposes students were left to fend for themselves and that many students were sent to alternative schools that were not as well equipped.

After the lawsuit was filed, the school closed for good in 2016.

In his decision, Breyer noted that the parents of Purdue students were represented by the American Civil Liberties Union of Kentucky, which filed the lawsuit.

He also noted that while the district had previously said that the shuttering of the school would result in the closing of Purposes, it ultimately did not.

In May, Purposes administrators said that they had decided not to shut the school down.