Teaching assistants in K-12 education account for more than 1.2 million of American jobs. However, the work doesn't rank among the highest paid with a mean annual salary at $33,740, and in the areas employing the most teaching assistants, the Midwest, they’re unlikely to pay more than $30,000 per year. Although, like many of the more common occupations in the US, location makes a huge difference. In the Los Angeles area the average wages jump to $42,800, and teaching assistants in the Seattle metro are typically make $47,620.