"Ideally, the supervisor should be an expert teacher, a mentor, and a facilitator to catalyze the student's professional growth, such that the student's accomplishment is limited only by the extent of his or her ability."
To avoid the pitfall of focusing on one thing that is important to you in your new position and overlooking flaws that might have a large impact on you, create a list of important work-environment issues before you apply for your first job.