What are the big the difference between the BEED and BSED?

In Elementary Education, you will teach Elementary students, its more difficult because you have to master all the subjects in Elementary level.
Unlike in Secondary Education, you just need to master the major you like or love most.
Like for example, my major is English and currently I'm in my Practice Teaching.
 In Secondary Education, you will teach ONLY your major or sometimes your minor (my minor is Math) while in Elementary Education, you will teach all the subjects.
I am a secondary education major. My major is English.

Now if you want to teach elementary , God Bless You! No, I'm kidding. But most who choose this field have a heart to stay teaching at the elementary level.

Either way, good luck.