Which age range do most high school students fall within? What is the age range of children who are considered to have grown during the computer age? Is #1 similar to #2?
Yellow pages
Telephone directory of businesses by category
Would it be uncommon for a high schooler to use the yellow pages?
High school students are between 14-19 years old.  Teenagers now are considered 'digital natives'.  'Digital natives' are individuals who have grown up during the computer age, being exposed to technology from early childhood.