"E-mail is a party to which English teachers have not been invited," Dr. Hogan said.

"hI KATHY i am sending u the assignmnet again," one student wrote to her recently. "i had sent you the assignment earlier but i didnt get a respond. If u get this assgnment could u please respond . thanking u for ur cooperation."

__Most of her students are midcareer professionals in high-tech industries,__ Ms. Keenan said.