Steven Halpern | Charles Halpern | Baruch Halpern | Abraham M. Halpern | Halpern | Gregory Halpern |
In 1991, Stroth began studying long-form improvisation with Del Close and Charna Halpern at what was then called Improv Olympic, now the iO Theater in Chicago.
The SFIC produced master classes by some improv teachers including Charna Halpern (IO Theater), Mick Napier (Annoyance Theatre), David Razowsky (Second City Los Angeles), and Ian Roberts and Matt Besser (Upright Citizens Brigade).