Class

1. student

1.1. Gender

1.1.1. Male

1.1.2. Female

1.2. Age

1.2.1. 17-18,18-21,21-up

1.3. Major

1.3.1. HDFS,IST, PREMED, ECT

2. teachers

2.1. Tutors

2.2. Professor

2.3. TA's

3. Environment

3.1. size

3.1.1. small,medium, large classes

3.2. Lecture/ Labs