Directive and supportive leadership

Recall the leadership presentation to high-schoolers activity, I learned that it is very important for a leader to understand different situations need different styles of leadership for best result. And of course, a leader also need to know either to be more directive or supportive in given situations. Ultimately, apply the best fitted leadership style to situations for optimal achievements.
Directive leadership style is more transactional, focusing on efficiency. Just like during the activity our group leader Kevin started the meeting by getting everybody to know the agenda of the meeting. And by giving clear instructions Kevin divided the group into several smaller groups to think of ideas for what we can do for intro, and the body. Also he emphasized the importance of knowing the audience- high-schoolers and their characteristics like having short attention span, do not like pure academic lecturing, vocabulary limitation? and so on. Thanks to Kevin, all our group members knew what they should be doing right away and we had a quick start.
Supportive leadership style is more transformational, emphasizing effectiveness. Just like when our second leader Pam came in and saw that every subgroup was on top of what they were doing, she chose to let the groups do their own thing. And she just constantly checks with every group and make sure everybody is on the same page and our team as a whole is going toward the ultimate goal.
Therefore, it is the leader's job to acquire skills to perform both types of leadership style. And it is also the leader's job to understand what the organization's goal is at each point and apply corresponding style of leadership for best result.