I'm moving to a new school

<p>I'm moving from a school in an Asian country(school a) to a school here in the US(school b). I was placed in the honors class in school A (everything was honors, including pe) and I struggled to keep up with the change of subjects and activities. Hence, I could not achieve my goal of getting all A's (I had one B- and two B+ out of 10 classes and the rest were all A- except for one A+ on a minor subject).
I am not sure whether school b will place me in honors/ap classes and I am worried that my education and credits are inconsistent due to my transfer.
Will this affect my chances of getting into an ivy/elite school?
Please help ;_;
Also, before I headed off to my country, I attended 3 years of middle school in the US.</p>