Foster taught a Spring Semester master class at New York University's Tisch School of the Arts Undergraduate Department of Drama, beginning in January 2010. It culminated in a cabaret performance at Joe's Pub in May titled "From Rodgers To Heart". She taught the master class again in Fall Semester 2010, culminating in another performance at Joe's Pub, "Crazy for Gershwin". Both were musically directed by Deborah Abramson. She is now on the faculty of NYU's New Studio on Broadway. Foster taught a week-long master class session at Ball State University (Muncie, IN) in January 2010. She continued her relationship with Ball State in September 2010 by working with students in the classroom, teaching master classes, and performing workshops for students of the Department of Theatre and Dance.