Leaders & Trust:
Benjamin and Elliot, as Head Boy and Captain of the Quidditch team (also Prefect) seem natural leaders. Peter is fairly loyal to them, though of course he doesn't know them well personally. He looks up to them and would be willing to follow their lead.

Admire & Like:
He admires Benjamin and Elliot. He also admires Josiah, as an important member of the Quidditch team. 
He likes Tanai and Anaphora all right, though he is quite aware that he's younger and a boy, so he wouldn't actually really call them "friends."
If he was closer in age to Quinlan he would probably want to be friends with him too.

Tolerate & House Loyalty:
He tolerates and respects most of the Ravenclaws; Peter has fairly high house loyalty.

Overlook:
As a 3rd year, Peter is too young to really be a leader, but isn't quite as young as the 1st and 2nd years, so he's just at an age not to be too noticable. As a result, he tries not to overlook anyone himself, though occasionally the 1st years do get on his nerves a bit if they chatter on.

Frown upon:
Peter's pretty agreeable and tolerant of most Ravenclaws, and willing to be friends with any of them; he's a bit of a people pleaser sometimes.