according to:
link

Heather Morris' character Brittany, is a Dutch-born exchange student! So I knew about her being dutch born from the episode where Sue gets Quinn to make Puck and Brittany feel like minorities and Sue mentions it then! but has it ever been mentioned that she's an exhange student?

this is what the website said:
'The một giây episode, on Sept. 28, will revolve around pop biểu tượng Britney Spears and her strangely symbiotic, spiritual relationship with Glee's Dutch-born exchange student and cheerleader Brittany, played bởi Heather Morris.'

WAKE UP IN THE MORNING FEELIN’ LIKE GLEE’S BRITTANY

GRAB MY DUCK, I’M OUT THE DOOR, I’M GONNA HIT MCKINLEY

BEFORE I LEAVE, LOCK MY DIARY IN A HAT

BECAUSE I DON’T WANT IT TO BE STOLEN bởi MY PSYCHIC CAT

I’M TALKING CHEERING FOR THE CHEERIOS, OHS

NEVER WEARING ANY OTHER CLOTHES, CLOTHES

SUE BLOWIN’ UP A MEGAPHONE, PHONE

JAZZ-SQUARING, hát UP IN GLEE

NOTES AND CHOREOGRAPHY

TRYIN’ FOR A BIG-ASS TROOOO-PHYYY

DON’T STOP, POP AND LOCK,

SCHUESTER SHUT THE FUCK UP

THIS WEEK, GONNA SPEAK

MAYBE MAKE SOME SENSE, WE’LL SEE

SANTANA, WANNA BANG HER

BUT CAN’T EVEN Kiss HER CHEEK, NO,

WHOA-OH OH-OH

WHOA-OH OH-OH