I hold an Australian tourist visa until May 10. My daughter and I applied for study abroad and accompanying student visas on March 20. I would like to ask if the tourist visa is invalid?

While you are waiting for your study visa, your tourist visa will not be invalid. However, if your study visa is approved, your tourist visa will definitely be invalid. If your study visa is rejected, then you Your tourist visa will also be invalidated. Because my client has encountered this situation many times, that is, after applying for a study visa and being rejected, he then entered the country with a tourist visa and was refused entry by the Australian Immigration Bureau. Or when you enter Australia, you will be strictly questioned by the Australian immigration officer. Even if the Australian immigration officer allows you to enter, the stay time given to you will be very short. It's a pity that you are causing trouble for yourself.