Complex sentence: Richter returned to college in 2004 and graduated in 2008 with a BA from Yale University, entering the university through the highly competitive Eli Whitney Students Program, Yale College's admissions program for non-traditional students.
Split into simpler sentences: Richter returned to college in 2004, graduating in 2008 with a BA from Yale University. He entered Yale College through the highly competitive Eli Whitney Students Program, Yale College's admissions program for non-traditional students.