OP, I'd guess that adding an elementary ed major could potentially extend how long it takes you to complete your bachelors depending on where you are in your education. In addition, I don't often see elementary ed majors now that aren't also special ed majors because that's what many schools like to see because of inclusion. In short, I would first figure out exactly what adding on the ed major would be in terms of time and money. Then decide if it's worth the extra effort, and how split you are on teaching versus PT. That being said, I was a Bio major with secondary education certification, and I think the education background has been a huge bonus for me. Treating patients in PT comes down to a lot of teaching and patient education! By the time you finish student teaching you will also be over any public speaking and professional communication issues you may have had, which is also incredibly helpful!