Holing up in a classroom was such a spectacularly bad idea, but Derek didn't have anything better to suggest and it seemed no one else did either. There was yet another person in the school to add to their group, and Derek keenly felt the responsibility of protecting the teenagers. He recognised Lydia from her frequent visits to the house to tutor his younger sisters, and that just made it worse.
Derek was propped on the teacher's desk and he let out a breath as his shoulders slumped. The pain had eased considerably, and as he watched, the gashes on his thigh completely closed up. He had no idea what Shauna had done, but he was grateful to her. Without her intervention, he would have taken a lot longer than that to heal.
The howl sounded again, and Derek concentrated, because it was moving...closer. Of course, it was moving closer. Because that was just Derek's luck.
Pushing himself up off the desk, he was now able to stride unaided towards the door. "Stay back," he ordered them, glancing back to make sure they were obeying. Whatever happened, he wanted to be between them and the werewolf. Derek drew in a slow breath, fighting back the fear that threatened to overwhelm him momentarily (though he worked hard not to show it). This could be bad and he knew it, but there was nothing else he could do.
They were sitting ducks in the classroom though, and that seemed bad. Derek made a decision that he knew was probably not the right one, not what his mom would do (where was she anyway?) but he couldn't think of anything else.
Glancing over his shoulder at the teens, his hand resting on the door handle, he said, "Stay here and lock the door after me if you can. Find a way to protect yourselves." They were in the chemistry classroom. Surely there was something they could use. "And get out of here if you can." His eyes met Stiles, the only one he knew who had a car. "Get them somewhere safe."