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It’s always been true that if you want to earn more money, you should think about going back to school.

But how many people realize that so many teaching posts could carry six-figure salaries?

According to the latest statistics from the U.S. Department of Labor showing average salaries for a range of occupations, six categories of teachers are included in the rankings showing jobs where the average of the top earners (the 90th percentile) is in excess of $100,000

They range from math teachers to those who impart knowledge about home economics. In math, for example, the official Labor Department definition of jobs done by those in that teaching category is “teach courses and/or pursue academic research pertaining to mathematical concepts, statistics and actuarial science and to the application of mathematics in solving specific problems and situations.” So each teaching group specifically includes university and college lecturers at the postsecondary level, rather than high school teachers.

The data also show, of course, that the true average wage for all the teachers included in the data set is between $55,000 and $65,000 a year. But the ranking measure–the average of the higher-earning individuals in each category–puts teachers of certain subjects into the six-figure range.

In order of their average salaries for top earners, the subjects most in demand are computer science, sociology, psychology, mathematics, history, languages and home economics. In terms of numbers as defined, there are 44,570 math teachers and 36,630 computer science teachers, but just 4,330 home economics teachers.