According to Clark, the duo worked against each other to make themselves better.
"We pushed each other for the most part," said Clark. "We always went up against each other in practice and you know how fast Charlie is so going against him definitely helped me. Overall, I think we make each other better."
A three-year starter for Lassiter, Clark recorded 40 tackles and four interceptions from his cornerback position, earning all-county honors.
However, what makes him especially important to NC State is how well he fits the Wolfpack's defensive scheme. A playmaker with terrific instincts, Clark excels in zone coverage and is a physical defender willing to come up and make tackles in space.
"I feel I'm the perfect fit for what they do," said Clark. "I get all of my picks from zone coverage, and I like being able to look at the quarterback and see what he's looking at... read him.
"Overall, it fits how I play. State ran a lot of what we did in high school so it played a role in my decision."
Clark was also a standout on the hardwood for Lassiter, where he started at guard. He believes playing basketball helps him as a defensive back.
"I think basketball helps me a lot," Clark stated. "You have to play hard all the time and you've got to compete. You need to be physical with the ball but mainly it helps with my footwork. I have to slide and move my feet defensively and I think that translates over to to football where footwork is critical, especially as a corner."
Recruited by Wolfpack assistant Jon Tenuta, Clark was NC State's second commitment in the 2012 class, committing in January of 2011. He had taken a couple of visits and was familiar with the program when he made his decision.
Now he is just a couple of weeks away from enrolling.
I'm excited," Clark said. "I'm just ready to get there and see how the next level is. I'm ready to get out of Marietta and get up to NC State.
"The main thing is I want to get up there and start to work. The coaches expect me to come in and compete right away... be ready to play. Hopefully I can get some minutes and get on the field as a freshman."
Clark has the luxury of coming in and playing competing at a position where NC State might be the deepest. The Wolfpack has arguably the top cornerback in the country in junior David Amerson and senior C.J. Wilson is a three-year starter. Junior Dontae Johnson will compete for playing time, and so will freshmen Tyrrell Burriss and Juston Burris and sophomore Jarvis Byrd.
"We have a lot of defensive backs... I'm ready to learn everything I can from them," said Clark. "I just want to learn their tricks... find out what they know.
"For me, I've been doing my best to try and come in the best shape possible. I've been doing a lot of workouts on my own, running the stairs, doing ladder drills, things like that. I'm hoping to come in and be ready to compete."