The School follows the system of “credit hours”. A credit hour corresponds to one hour in class per week throughout the semester and an average of two additional hours of preparatory work. Thus a course earning 3 credits requires 3 class hours per week and an average of 6 hours of reading, research or other preparation. The normal semester load is 5 courses or 15 credits.

The numerical grading system used at the N.E.S.T. is as follows:

90-100	Excellent
80-89	Good
70-79	Average or Fair
60-69	Poor work but passing
60	Lowest passing grade
F	Failing equals 59; the teacher may indicate a lower number for particularly poor performance.
I	Incomplete, may be given as a temporary final grade, but the work must be made up and a final grade given within 6 weeks of the beginning of the following semester or it will automatically be considered as an “F”.
WP/WF	Given for a course dropped after the first 2 weeks and indicating whether the student was “passing” or “failing” at the time of withdrawal from the course.