History class. Official website of Longgang High School shows that Cao is a history teacher. Longgang Middle School is a public school with strong teachers and beautiful campus environment. Longgang Middle School, formerly known as Longgang Senior High School, was founded in 1994. It is a provincial second-class key middle school, a provincial second-class characteristic demonstration high school and a provincial civilized unit. Lv Junjie, the current Party branch secretary and principal.