The Sex Professionals Association in Spain has opened a school offering professional training in prostitution.
Aprosex, according to its website, offers a course providing sexual knowledge, security advice and professional tips. Modules include an introduction into the "whore stigma" and the psychological consequences of working in the sex industry.
The four-hour training programme, called Prostitution: The Basics for Professionalisation, costs €45 (£37).
Course topics include the reasons for going into prostitution, its disadvantages and dangers, and whether a candidate is "ready to practice the profession". Sexual health is a main topic, as well as marketing tactics.
For established sex workers, Aprosex offers advice on professionality and saving plans.
The website reads: "We want to offer a course that will make you professionals with more wisdom and greater security.
"Working in the world of paid sex is not easy. It requires emotional intelligence, great lovemaking skills, a great capacity for empathy, social skills and self-confidence.
"Until today, being a prostitute was learning by practising, but it can bring fear, disappointment, loneliness and sometimes even sadness and shame."
Conxa Borrell, the president of Aprosex and an escort for seven years, said the course would offer crucial safety advice for women in the sex trade. She emphasised that the course would address myths surrounding prostitution including, she said, the belief that women were not allowed to say "no" to customers.
She said: "Women are fed up with being treated like submissive slaves, humiliated and raped. They are entering the profession at different ages, from 18 and 23 to over 50."
Fernando Esteban, a lawyer who prepared the course dossier, said: "They must feel that they are not alone, that if there is an assault it can be reported."
It is not the first Spanish school to offer training in the multimillion-eurosex industry. In 2012, a Valencian firm survived a legal challenge against it's professional course in prostitution. The company, which offered "a job on graduation", advertised the course for €100.
Lessons include how to use erotic toys, as well as the most popular positions in the Kama Sutra. Prosecutors found the company not liable for a criminal offence, as the adverts did not promote prostitution, constitute fraud and were not aimed at minors.