Generally, yes. Most high school english teachers hold degrees in English, which often requires creative writing classes to obtain.
No they do not. The salaries teachers make depends on the schools, their position within the school, and length of time teaching; not by the subject they teach.
Ridgewood High School - Illinois - was created in 1960.
Illinois High School Association was created in 1900.
Hampshire High School - Illinois - was created in 1838.
Princeton High School - Illinois - was created in 1867.
Woodstock High School - Illinois - was created in 1921.
Galena High School - Nevada - was created in 1992.
High school teachers
A lot less.
Illinois High School Association's motto is 'The Future Plays Here'.
Queen of Peace High School - Illinois - was created in 1963.