â The presence of marijuana is detected by a drug test through the presence of the active chemical THC or Tetrahydrocannabinol. Technically, what is detected is known as THC-COOH (11-nor-delta-9-tetrahydrocannabinol-9-carboxylic acid).
1 Average Riding Instructor Salary: Independent riding instructors typically charge an hourly rate for services but on average earn about $35,000 to $39,000 per year.
Part-time Instructor Salary. Part-time Instructor average salary is $69,589, median salary is $49,015 with a salary range from $22,880 to $376,480.Part-time Instructor salaries are collected from government agencies and companies. Each salary is associated with a real job position.art-time Instructor Salary. Part-time Instructor average salary is $69,589, median salary is $49,015 with a salary range from $22,880 to $376,480.