This study compared pre-service teachers' perceptions of their professional competencies at two campuses of a large regional teacher education university, where one campus provided students 22% more hours of professional placement in schools and related educational settings. Students who had experienced more hours in schools and such settings were more positive about their, ability to apply their knowledge of students and how they learn, classroom management, professional knowledge and practice, and community engagement; however, when students felt well supported during professional experience, such differences diminished. Additional hours were not associated with pre-service teachers' perceptions of their ability to apply subject content and teaching; plan, assess and report; and effective student communication. Researchers argued that this pointed to the crucial role of good classroom mentors in teacher professional experience but also the value of students' tertiary teacher education in preparing them for classroom teaching.