Hi, I'm trying to see if there are any "summer courses/classes in
racing" that I can join.  Whether it be go-karting, formula racing, as
long as it has to do with racing.  What I mean by racing summer school
is that, the courses are actually longer than just a 3-5 day intensive
training (workshop), where you actually have to stay for like at least
2 weeks or a month at the place for training.  Anywhere in the US or
Europe is fine.
Here is a little advice for the researchers that I thought of, I heard
of professional racing schools (don't know names, sorry) in Europe
that f1, f3, gp2, racers actually graduate from.  Maybe that would be
a good place to start looking at, see if they offer summer courses on
racing.  Thank you so much, I wish to do the research myself, but I
lack time and the skills.
*If I'm not being specific enough, let me know, I will add more
details to what I'm looking for.

How about this site...check it out.

http://www.saturndan.com/racing_school.htm

Is this anything your looking for?

These guys are very knowledgable when it comes to go karting - they
should be able to point you in the right direction....
http://www.gokartinglondon.co.uk