Instruction :
Who are the known members of the student group named Dumbledor's Army, from the Harry Potter book series.

Response:
The known list of students in Dumbledor's Army is as follows:

Harry Potter (leader and teacher)
Ron Weasley (co-founder)
Hermione Granger (co-founder)
Neville Longbottom (Leader)
Ginny Weasley (Leader)
Luna Lovegood (Leader)
Angelina Johnson
Alice Tolipan
Alicia Spinnet
Anthony Goldstein
Cho Chang
Colin Creevey
Cormac McLaggen
Dean Thomas
Dennis Creevey
Ernie Macmillan
Fred Weasley
George Weasley
Hannah Abbott
Justin Finch-Fletchley
Katie Bell
Lavender Brown
Leanne
Lee Jordan
Luca Caruso
Maisy Reynolds
Marietta Edgecombe
Michael Corner
Nigel Wolpert
Padma Patil
Parvati Patil
Romilda Vane
Seamus Finnigan
Susan Bones
Terry Boot
Zacharias Smith