A suspended student whose father said he sometimes got picked on because he was small walked into his high school Thursday, shot and seriously wounded a teacher, then killed himself.

A second teacher died, although authorities were unsure whether she was shot or suffered a heart attack.

Toby R. Sincino, 16, was expelled early last school year but was back on probationary status. He was suspended again Wednesday after making an obscene gesture on a school bus and faced another expulsion.

On Thursday, he walked through a back door at Blackville-Hilda High School armed with a .32-caliber revolver. He strode by two classrooms and entered a third where he fired the gun at math teacher Johnny Thompson, 38, investigators said.