You can look in the school catalog (can do that online) which will give you that information, or ask the admissions office or office of the registrar at the school you attend.
One hour = 60 minutes. Quarter hour = 15 minutes.
Quarter [hour] to the hour = 15 minutes to the hour. OR start with the hour, say 1:00 PM. in fifteen minutes it will be a quarter after the hour....
For colleges and universities that operate on a regular two semester academic year, 16 hours of class contact time is equivalent to one credit for the semester. Thus, a three credit course is...