The paper presents the results of research on the opinions of students of preschool and early childhood education (PECE) and special education (SE) on the importance of having various specific professional competencies by a teacher of inclusive education. The study used the diagnostic survey method and involved 202 students from both fields of study. Five categories of professional competencies were analysed: evaluative, psychological, innovative, communicative, and substantive-methodical. Both groups state that a high level of professional competence is especially expected when working with a pupil with an intellectual disability (ID).