Sorry for some reason my previous posting could not be completed.

I am in H4 visa, my spouse is in H1 and I have a daughter who is also in H4. Due to circumstances I am changing my visa to F1 and my spouse and daughter to F2. My attorney says  fill separate I-539 one for myself (F1) and one for the other two (F2). School says one form is enough.

I google searched but could not find answer to my querry ( I mean, I was not lazy )

Thanks for your time !