Kyle was about halfway to the abandoned workshop when he heard a bunch of blonds talking using "like oh my gawd" every other sentence. They were Jenifers friends meaning she was probably with them or at least having them look for him. Kyle acted quickly he turns around and starts walking casualy the other way hopeing none of them had seen him.
This delay cost Kyle precious time given that the more time he spent in the hallways the greater the chance she would find him. Kyle made his way in a giant circle and got inside the abandoned classroom.