1. Place a spring roll wrapper on your work surface with a corner pointed towards you. Place string cheese toward the bottom.
2. Fold bottom corner over cheese, rolling once, and then fold in each side. Continue to roll up and wet the top corner with a wet pastry brush (or your fingers) so that the wrapper will stay closed. Press tightly to seal.
3. Repeat with remaining wrappers and cheese.
4. In a deep pan or pot, heat oil to 375 degrees Fahrenheit and fry cheese sticks in batches until brown, about one minute. Remove with a slotted spoon and drain well on paper towels. Serve with marinara sauce (see below).