I had two back in fifth grade. One was a stuck-up-rich-bitch from Moldova (name was Mihaela, we called her Ella) and the other was from Slovakia (her name was Monika). Monika was super nice, and Ella was kinda bipolar. Don't get me wrong, she was nice at times, but she always had to be right no matter what you were to say, and she'd always want to go shopping. Which, sorta blew my family up. My dad would fall in and buy stuff for them that would be like hundreds of dollars of clothing, and my mom felt like he would just care more about them rather than spending money on bills and stuff
and oddly enough, months after the exchange students went back home after their 1-year-stay here, we caught my dad on a dating website with the name "ella____ (random numbers)"
so my sister and brother and I really think he has a legitimate special interest for exchange students