WEST ISLIP - A school bus driver accused of moonlighting as a heroin dealer pleaded not guilty in court today. 

Anna Kovarick was a bus driver for private schools in the West Islip area, including St. John the Baptist High School and Our Lady of Lourdes.

The Bay Shore woman was arrested by the Heroin Task Force on April 10.

According to officials, Kovarick would drive kids to school in the morning and then sell heroin before driving the kids home.

Prosecutors say Kovarick, who worked as an ACME bus driver for 16 years, would park at the bus depot in Bohemia and meet her clients.

According to officials, Kovarick was selling heroin under the direction of her boyfriend, who is currently incarcerated in the Suffolk County Jail.

Kovarick was allegedly selling between 300 and 500 bags of heroin every two to three days.

Officials say there is no evidence she drove the kids while high.

Kovarick is being held on $50,000 cash bail and $150,000 bond. She is due back in court next month.