Question: Before co-creating the The Mighty B!, where did Amy Poehler study improv in the early 1990's?

Context articles: The Players Workshop
The Mighty B! (season 1)
IO Theater
List of The Mighty B! episodes
Amy Poehler's Smart Girls
Yes Please
The Mighty B!
Amy Poehler
The Set Up (Parks and Recreation)
Jesse Falcon

Created in 1971 by Josephine Forsberg, The Players Workshop was Chicago's only official school of improvisation for over a decade.
 Although it was never officially a part of The Second City cabaret theater, The Players Workshop was often referred to as Players Workshop Of The Second City, due to the school's close affiliation with the famous sketch comedy stage.
 From 1971 through the mid-1990s, performers flocked to The Players Workshop to study improv with Josephine Forsberg, Linnea Forsberg, Martin de Maat, or one of the school's many other instructors, in the hopes of eventually getting onto The Second City mainstage.
The first season of "The Mighty B!
" originally aired in the United States on Nickelodeon between April 26, 2008, and June 12, 2009.
 The season was produced by Nickelodeon Animation Studios, Paper Kite Productions and Polka Dot Pictures, and series co-creators Amy Poehler, Cynthia True and Erik Wiese served as executive producers.
iO, or iO Chicago, (formerly known as "ImprovOlympic") is an improv theater and training center in central Chicago, with a branch in Los Angeles called iO West.
 The theater both teaches and hosts performances of improvisational comedy.
 It was founded in 1981 by the late Del Close and Charna Halpern.
 The theater has many notable alumni, including Amy Poehler and Stephen Colbert.
"The Mighty B!
" is an American animated children's television series co-created by Amy Poehler for Nickelodeon.
 The series centers on Bessie Higgenbottom, an ambitious Honeybee scout that believes she will become a superhero called the Mighty B if she collects every Honeybee badge.
 Bessie lives in San Francisco with her single mother Hilary, brother Ben and dog Happy.
 The series was picked up for a pilot in early 2006 under the name of "Super Scout".
 The series premiered on Saturday, April 26, 2008, which was the morning after Poehler's film "Baby Mama" had premiered.
 In September 2008, the show was renewed for a second season with 20 episodes.
 Brown Johnson, president of animation at Nickelodeon, called the show a "break-out hit" that "compliments and strengths" the Saturday morning line-up.
 The second season premiered on September 21, 2009.
Amy Poehler's Smart Girls is an organization and website aimed at helping young women with life's problems in a funny but informative way.
 It was founded by actor Amy Poehler, Executive Director Meredith Walker, who was the former senior producer for Nick News and the head of talent for Saturday Night Live, and recording artist Amy Miles, who is involved in the musical content on the site.
Yes Please is a 2014 book by American actress and television writer Amy Poehler.
 Poehler announced the book in January 2013.
 It was released on October 28, 2014 by HarperCollins imprint Dey Street, and was described as "full of humor and honesty and brimming with true stories, fictional anecdotes and life lessons" by the publisher.
The Mighty B is an American animated television series created by Amy Poehler, Cynthia True and Erik Wiese for Nickelodeon.
 The series centers on Bessie Higgenbottom, an ambitious Honeybee girl scout who believes she will become The Mighty B (a superhero) if she collects every Honeybee badge.
 Bessie lives in San Francisco with her single mother Hilary, brother Ben and dog Happy.
 Poehler provides the voice of Bessie, who is loosely based on a character Poehler played on the improvisational comedy troupes Second City and Upright Citizens Brigade.
Amy Poehler ( ; born September 16, 1971) is an American actress, comedian, director, producer, and writer.
 After studying improv at Chicago's Second City and ImprovOlympic in the early 1990s, she went to New York City in 1996 to become part of the improvisational comedy troupe Upright Citizens Brigade.
 The group's act became a half-hour sketch comedy series on Comedy Central in 1998.
 Along with other members of the comedy group, Poehler was a founder of the Upright Citizens Brigade Theatre.
"The Set Up" is the 13th episode of the second season of the American comedy television series "Parks and Recreation", and the nineteenth overall episode of the series.
 It originally aired on NBC in the United States on January 14, 2010.
 In the episode, Leslie (Amy Poehler) is set up on a blind date with an MRI technologist, played by Poehler's then-husband, comedic actor Will Arnett.
Jesse Scot Falcon (born January 17, 1971, in Flint, Michigan) is an American improv and sketch comedy performer based in New York City.
 He attended Albion College in Albion, Michigan, graduating in 1993 with a degree in Speech, Communications, and Theatre.
 Since 1998, Falcon has been a performer at the Upright Citizens Brigade Theatre, working with comedians like "Saturday Night Live"'s Amy Poehler and "The Daily Show"'s Rob Corddry.
 Falcon also performs with other comedy groups such as Mother, The Chipperton Family, Telethon, and Girl Crush 2040.
 He has also appeared in the comedic short film "Running with Scissors".