Would-be teachers should have experience of working with a youth group, a Shetland delegate told the conference.
Wendy Dyble, a primary teacher, said: "Most of us start work without any experience of the community we work with. Cubs, Scouts, Brownies, Boys' Brigades and youth clubs are all crying out for people to work with them and make them a success."
Mrs Dyble said a trial period for students would allow them to decide whether they liked and could handle young people. "If you then find you absolutely hate it, you have time to get out rather than find the children are hell."