Middle income student attendance declines at UC Samantha Schaefer, 2011-10-30 Orange County Register Over the past 10 years, the proportion of middle-income students attending the University of California has declined at nearly twice the rate of California middle-income households, while the share of lower- and upper-income UC students has risen. Some analysts suggest the trend stems from repeated hikes in UC tuition costs, coupled with limited access to many kinds of aid for middle-income students, who are increasingly incurring larger and larger loan debt. “We’ve got some significant problems here,” said William Tierney, USC Rossier School of Education professor, Wilbur-Kieffer…