The TV show, which recently won its fifth Emmy Award for Outstanding Comedy Series, will feature Daly as Mrs. Plank, Lily's old-school teacher.
The episode will also feature guest stars Steve Zahn and Andrea Anders as Ronnie and Kim, who move in next door to the Dunphy family.
Daly won a Tony Award for her performance in . She received Tony nominations for and Mothers and Sons and has also performed in and . She is an Emmy winner for "Judging Amy," "Christy" and "Cagney & Lacey."
The cast of "Modern Family" includes Ed O'Neill, , Julie Bowen, , , Eric Stonestreet, Rico Rodriguez, Nolan Gould, and Ariel Winter. The series will return Sept. 24 at 9 PM on ABC.
