Hi Raubt,
Welcome to the Forum.
Would it go:
Throughout my education, I’ve have a great deal of success researching and focusing information on many different topics for use in countless reports and presentations I'd say 'on', not 'from'. You might also consider saying something like 'analyzing' rather than 'focusing'. It seems to me that the meaning of 'focusing' is a little vague.
And in this context, is the word "topics" the better choice, or "subjects"? Either is OK. Perhaps 'subjects' is better as it sounds like it is at a higher level.
Instead of 'countless', I'd say something like 'a very large number of'. 'Countless' sounds a bit world-weary, like you are tired of counting.
Best wishes, Clive