A private tutor is a person who is hired to coach and assist one (maybe two) students at once on a certain given subject or multiple subjects. The idea behind private tutoring leading to success in academia is that it is like a second teacher on the particular subject that they are tutoring on.
This is great for people who need the extra help and learn better that way, as many people do. There are multiple styles of learning out there, and each person has a different style of learning. Private tutoring is a great option and an even better career/academic move when it comes to one particular style of learning, and that is those who learn best with one-on-one instruction and specialized attention. Other people do not require such close contact and have great visual memories, or can pass simply by taking good notes. There are other people who get along in their academic life without adopting any style of learning, always slipping through the cracks and taking things as they come, and that is okay.
There are a variety of benefits in private tutoring that people have yet to discover. The main reason people neglect to truly explore the benefits of hiring a private tutor is because they can get quite costly. In all reality, how can you really put a price on your education? Hiring a private tutor may be the difference between passing and failing, and the possibility of having to repeat courses is a lot more costly than it would be to hire a private tutor.