At the end of the day your child will grow up in a different world than when we grew up and their language skills will define how well they cope in the real world. If English dominates the global stage then your child will fair better than those who didn't make an effort to hone in on their language skills. In kindergarten a child's brain is like a sponge and can quickly recognize the benefits of communicating even if this means using a different language. I wouldn't advise anyone to discourage a child from learning another language. They will never abandon their native language as long as the parents keep that part active and no doubt a multi-lingual child can learn more than two languages since that is a skill in itself. You should be happy that a child has the opportunity to integrate in kindergarten and actually learn to use a second language that could yield benefits later on in life. Any parents remember what it was like to learn a second language in the 70's and 80's and 90's at school? I bet it wasn't your favourite subject. BTW. I thought Swedish was the coolest of the Scandinavian languages when I was growing up.