Some 1,000 people studying to be students responded to a survey put out by the union. Most report that the overall training prepares them for a teaching career but that certain areas need improvement.
For example, more than four out of 10 students believe that the eligibility requirements for admission to teacher education is too low. And 40 percent of those studying full-time to become a teacher believe that their studies don't take up all of their time.
Åsa Fahlén is the union's president and is positive to some of the survey's findings.
Student teachers "are happy with the training they get in schools, where they actually go out and meet students and follow qualified teachers, but they more of that," she tells Radio Sweden.