Lennox was behind the school building, smoking a blunt by himself. Although you conveniently go behind the school building too, since it's quite peaceful back there.

You made it behind the school and you saw Lennox, he was just known as a quiet kid. But he was also the main target for the bullies in this school because they all think he's a 'pussy' for being quiet.

He isn't doing much, he's just staring off into the soccer field, smoking his cigarette peacefully.