I was just on the website, and can't tell if it means that you need to be 16 to make just a tandem, or make a skydive at all; it says...
Due to equipment limitations, tandem students must weigh no more than 230 pounds. You must be 16 years or older, and be in good physical health to skydive. Physically challenged people may skydive. Persons taking prescription drugs or having a recent injury or illness that would require a doctor's evaluation, must have a doctor's certificate stating that no adverse effects would result from vigorous activity or making a skydive. Minors must have a notarized waiver before the day of your jump. Please contact us at 910-904-0000 for details.