Is it possible for me to major in Interdisciplinary studies first then get a masters degree in secondary edu.?

Jackson Esmiol: Yes.

Toby Caswell: I suppose so but what would you teach? If you are teaching at the secondary level then you generally specialize in one field (e.g., math, history, English). I am not familiar with the field of "interdisciplinary studies" but it does not sound like a field that would offer many teaching opportunities.