I will be among the first to bite your head off for using the term Male Nurse. But the truth is: Nursing is all about dealing with human response to illness. Every person responds a little different, as does every nurse.
For example: There were two guys in my graduating class. Neither of us applied for Maternity gigs. I can totally sell the Kindly Grandfather role, and my patients liked it. But my female classmates are having fistfights over who gets Maternity and NICU, and I'm not that drawn to it. I got a buddy working ER which he totally grooves on because "it's like having fastballs thrown at your head 8-hours a day."
I get a special satisfaction working with terminal patients; a female classmate got her first gig working as a prison nurse. Each of us are like, "Man I Could Not Do that job." You might find yourself with a special affinity for sports medicine, or you might be the only one in your class that doesn't blow chunks in his face mask when you tour the burn unit.
9th Grade? Take Latin. Most diseases and body parts have Latin names, and you'll get a jump on your Anatomy, Physiology & Pathophysiology. Load up on every offering with "Transcultural" in the title. I'm also a big advocate of Tai Chi and Yoga for you and for what you can teach your patient.
Here's something else to consider: When you start nursing school, they will make you get various Red Cross certifications like Health Care Provider CPR / AED, and you have to re-certify every couple years until you die. Nobody says you can't take those courses now.
Good Luck.