Two related topics to explore the pros and cons format of TOEFL Independent Writing, which can also be applied to the Independent Speaking tasks.
The pros and cons of applying for a study program backed by government or private institutions as opposed to paying your own tuition.
The pros and cons of studying abroad as opposed to studying in your own country.
This kind of essay requires that you present advantages and corresponding disadvantages of the topic. You do not necessarily have to choose.
What is essential is that you present a benefit or a drawback and give an example of how it can happen. You are comparing and contrasting two sides of the same coin.