The study of self-efficacy and its role in teacher performance has intrigued the interest of many researchers over the last two decades. This study aimed to examine the perceptions of teachers regarding the role of principal instructional feedback during the process of teacher performance evaluation in increasing self-efficacy and how it affects classroom management skills. Because self-efficacy is vital in determining teacher effectiveness and student achievement, little is known about the role of the teacher evaluation process in the self-efficacy and classroom management skills development of teachers. Quantitative correlational design methods were used to conduct this research, and the sample was chosen using the simple random sampling of 379 teachers in primary and lower secondary schools in the Republic of Kosovo. Data were gathered using the Teacher Sense of Efficacy Scale (TSES) long form, adapted and modified to meet the research objectives. A moderately positive relationship between evaluation frequency and feedback frequency, feedback frequency, and teacher self-efficacy in classroom management skills was revealed in this study. Additionally, a strong positive correlation between feedback on classroom management and teacher self-efficacy in classroom management skills was also observed. The more frequently teachers go through the performance evaluation process and the more feedback they receive, the more their self-efficacy grows and they develop classroom management skills.

The education system in Kosovo is in the phase of implementing the curricular reforms which aim at changing the teaching and learning approach. The new curriculum is a necessary innovation in the pre-university education system and it has already started to be implemented in all schools in Kosovo, faces many difficulties, especially in achieving learning outcomes in some curricular areas. This research aims at analyzing the obstacles and challenges in achieving results in the Languages and Communication area and to recommend appropriate ways to facilitate its implementation. The representative group consists of 75 teachers who work in five primary schools in Kosovo while the data is collected through a questionnaire for teachers. The research findings show that most teachers have sufficient knowledge and have a positive attitude towards the new curriculum. Challenges arising from this process are: insufficient knowledge of the new curriculum, inadequate cooperation among the teachers, lack of ICT and supporting materials in schools, difficulties in planning the learning results, and non-regular monitoring of teachers, textbook compliance with the principles and requirements of the new curriculum The development of competences and the improvement of results in this area can be achieved through changing educational policies as well as monitoring and accountability of teachers.