Mara Inés Peredowho, a teacher of sex education, is in danger of losing her job after she instructed her male students to bring a condom filled with their sperm to class.

The unusual lesson, which was intended to be part of a sex education class on the male reproductive system, infuriated parents in Bolivia, and now the female teacher at the Juana Azurduy de Padilla school in the municipality of Minero may lose her job as a result.

Peredo, who has been accused of corruption of minors, has now apologized for the "misunderstanding".

It has been stressed that the students were not obliged to do the "homework".

"I am a mother of a family with four small children, and I am not a pervert," Peredowho told Duty newspaper.

Peredowho went on to explain that the assignment was to see how long sperm can live in a humid place or environment.

"That was my goal as a teacher and not, as some media say, to pervert the students and have them masturbate and bring it in a jar, at no time was that my intention," she added.