Hello,

If the board panel enquires you about the duration, you can explain them the exact reason of what happened, there's no problem in that, this year due to pandemic a whole lot of shift happened in academic cycle starting from school level to college, and this is something anyone associated with education is more so aware, just focus on what's in your control, for a career in teaching if you have had great academic records over the years, then that's going to be a plus point for you, your in-depth knowledge about the subject, being acquainted with latest educational technology, teaching methodology etc, these are something that the board panel will be more interested in knowing, they might ask you about the duration, but then as I told you give them the real reason, and it's not going to be much of a problem, just focus on the areas where you can do better, your strengths as this is what that will help you make growth in life professionally as well as personally.

All the best!