Scholarships are pretty easy to find, depending on what sorts of riding you do.
Maybe Clubs/Organizations/Associations offer scholarship. CHJA (the Colorado Hunter Jumper Association) offers scholarships, for example. Do you show in anything? If so, I would check the corresponding association. Breed associations (AQHA, APHA, etc) offer them too, so if you're a member, compete in member shows, or own that breed of horse you can check that as well.
Local tack shops sometimes offer scholarships, one in my area does.
So, the answer to both of your questions, is yes.