Oprah Winfrey’s South African boarding school for girls has been rocked by it’s second sex scandal in less than two years.

Seven students at The Oprah Winfrey Leadership Academy outside Johannesburg were suspended last week for sexually harassing their schoolmates, the Afrikaans on Sunday newspaper is reporting.

The scandal comes ten months after 15 girls reported they had been sexually abused by a matron who was supposed to be supervising them.

Oprah Winfrey opened the $46 million school in January 2007 to help high achieving South African girls from low-income families. Students are offered free tuition, books and uniforms, as well as room and board.