'Don't get me started about the testing': Teachers reveal how education has changed over the past 20 years

Across the US, thousands of college graduates are taking the final steps in their education.

A lot has happened since they were born in the mid-1990s, and perhaps no one has seen the effects of those changes on future generations than teachers.

Business Insider spoke with a handful of elementary, middle, and high school teachers to get a sense of just how much the US education system has evolved over the past 20 years.