Complex sentence: The high school teachers who serve as instructors must meet certain standards in order to qualify for and continue teaching these classes for the university and can earn graduate credit for the initial training as well as towards continuing education and professional development requirements.
Split into simpler sentences: The high school teachers who serve as instructors must meet certain standards in order to qualify for and continue teaching these classes for the university. They can earn graduate credit for the initial training as well as towards continuing education and professional development requirements.