All things considered, David Helinski is happy with the evaluations some tough critics have given him for his work as principal of Bethel Park High School. The students' rating: 14 smiley faces and three frowning faces, and some glowing comments, including the assertion that he's "definitely the best thing that could of [sic] happened to BPHS in the last year." Nor is he troubled by the students who say his rules are "rediculous" [sic] and his announcements are "useless." "If the kids weren't questioning me about my severity in terms of enforcing rules and so on, I would wonder if...