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.
The average salary for driving instructor jobs is $44,000. Average driving instructor salaries can vary greatly due to company, location, industry, experience and benefits.This salary was calculated using the average salary for all jobs with the term driving instructor anywhere in the job listing.he driving instructor salary comparisons feature allows job seekers to get the information required to make important career decisions and negotiate salary ranges. For additional driving instructor salary information, we recommend visiting Payscale.com.