Some people say since "so" is a transitional word, it should have a comma after it like all the transitional words have. And some say if "so" is there for logical continuity, then no comma should be used.
The particular sentence I am writing is:
Moreover, I have completed my senior secondary studies in English and won 1st place at the regional stage of English Olympiad. So, I am confident that I will be able to complete a degree in English.