plural or possessive

I don't know how to write this sentence. Do I keep it plural:
?Despite the fact that our class was, more or less, quieter than your other classes during lecture, your passion and dedication to your field as well as to each of your students academic success was quite refreshing to see.
Or possessive:
?Despite the fact that our class was, more or less, quieter than your other classes during lecture, your passion and dedication to your field as well as to each of your student's academic success was quite refreshing to see