How bad is it to change jobs constantly?

If I may, what constitutes being a job hopper? Are we talking an average of multiple jobs a year, or an average of less than three years at a job? Would I be considered a job hopper with the following? - high school job for five years, manual labor - two part time college jobs for two years (Move for school, few month gap looking for a job while at school) - full time manual labor job for about nine months - swift (current, planning to stay for 1-2 years) - eagle transport (planned job after swift as a stepping stone to tankers, staying as long as it takes to get a cushier local tanker job, assuming it doesn’t turn into one)