The NASUWT teaching union says some schools have taken "student voice" too far by having pupils directly interview teachers for jobs and provide feedback on their classroom performance, which they argue is unacceptable and unprofessional. In one case, a teacher was labeled "Humpty Dumpty" by a student on their interview panel. However, others argue that when done properly with training, student feedback can provide useful insights and that candidates who fail to convince students are less likely to be effective teachers. It is up to individual schools to determine the appropriate role for students.