You can easily make a better case that as we increase the number of college graduates in the US, middle class wages fall.
post evidence to support your claim.
ive posted evidence, but here is more if you can comprehend it.
States with Stronger Unions Have Stronger Middle Classes | Center for American Progress
New Census Bureau data on state incomes released yesterday show just how important unions are to creating a strong middle class. An update to an analysis in our April 2011 report, “How Unions Make the Middle Class,” finds that a 10-percentage-point increase in the unionization rate would boost the average annual income for middle-class households—unionized or not—by $1,501 a year. Ensuring the United States has a strong middle class is critical, as the middle class is the engine of economic growth.
Unions strengthen the middle class by advocating for workers both in the workplace and in our democracy. Organized labor not only fights for higher wages and better benefits at work but it also makes democracy work for the middle class and advocates for policies that boost the middle class as a whole. As the new Census data make clear, stronger unions create a strong middle class not only at the national level but at the state level, as well.