Never noticed a pattern of not qualifying because I selected college graduate...
Just qualified for a 75-mile survey about clothes - asked about the fiber content in clothing purchases I made recently (in the qualifying questions, it asked if I had bought certain types of products in the past 3 days - clothing was one of the choices I selected) - interesting survey because they wanted me to get the clothing so I could look at the tags to enter the fiber content (i.e., 100% cotton, 95% cotton and 5% lycra, or whatever).