SOUTHLAKE - Two Carroll district high school teachers resigned after administrators discovered that they wrote hundreds of racy e-mails on the district's computer system. Some of the e-mails comment on students' physiques. Others use obscenities and describe sexual encounters. District officials said they cannot comment on the departures of Joe Guttery, who taught social studies at Carroll Senior High School, and jon Fisher, a speech teacher and adviser to the junior varsity Emerald Belle drill team at Carroll High School. Both resigned April 4 for personal reasons, district records show. But sources familiar with the incident confirmed that the resignations...