Among the 2013 graduates in math that are leaving LSU, and are heading to a PhD program are Nathan Bush (Math, Texas A&M), Daniel Case (Physics, Northwestern University), Donovan B. Myers (Physics, Urbana-Champaign), Thomas Naugle (Math, University of Mississippi), and Sarah Seger (Math, Rice University).
See https://www.math.lsu.edu for more examples on the placement of recent undergraduates.