Not too sure but it’s something like this I’d assume, “Hey my name is Mike and I'm 11 years old also I'm in middle school”
You just have to complete the phrase with a nationality. 'I am Canadian' for example, so in spanish it is : Yo soy Canadiense.
Answer:
Anata no okāsan wa dono kokusekidesu ka
Explanation:
or
あなたのお母さんはどの国籍ですか