A lot of changes take place at the end of high school. Kids graduate, earn a diploma, and go off to college or career. For men, there is one extra step.
It is a US law that all men ages 18-25 must register for the selective service system, aka the draft. It's not just for college students, it's for all males.
The easiest and fastest way for a man, from age 18 through age 25, to register, is to register online, here.
Since many colleges and careers will ask for proof that an 18 year old man has registered for the draft before offering admission or a job, be sure that your son registers. Then, he'll be ready for his next adventure!