In 2014, the median salary nationwide for a high school teacher was $56,310 per year. The median annual wage for all workers was $35,540. SOURCE: United States. Department of Labor. "High School Teachers." Occupational Outlook Handbook. 17 Dec. 2015. Web. 7 March 2016. Suppose a worker makes $26,000 in wages per year. Find the percent increase in salary the worker can expect if he/she trains to be a teacher and can expect to earn a salary of 558,000. Enter your response to the nearest 0. 1%