This study reports on the professional development and school leadership programmes requested by principals in Malaysian schools. A total of 557 principals provided feedback on their preferred school leadership and professional development programmes which they believed as essential to be effective school leaders. Based on their feedback, mentoring was named the most needed leadership development programme as it allowed access to the guidance, knowledge and skills of senior principals. As for school leadership courses mentioned by school principals, financial management was considered as most useful. The study concludes by recommending suggestions to improve principals' professional development programmes in Malaysia.