Numerous opportunities, both academic and nonacademic, exist for new undergraduates to transition to Northwestern before the start of the regular academic year. Academic opportunities include the Arch Scholars programs—Bridge I, Bio&ChemEXCEL, NU Bioscientist and the Posner Research Program —plus the Summer Academic Workshop in Weinberg College, the SESP Leadership Institute and the EXCEL (Excellence in Engineering Leadership) program in the McCormick School. Beyond the first year, Weinberg College offers Bridge II summer preparatory courses for chemistry and economics courses typically taken in the sophomore year.