I want to give name to a column where values will be "full-time studies" or "part-time studies". How should I name the column?
Enrollment Status would be a good choice.
From Purdue Global:
Enrollment Status and Definition of an Academic Year
Your enrollment status can impact financial aid eligibility.
The U.S. Department of Veterans Affairs may have different definitions for full-time and part-time status. You should consult the University's Certifying Official if you are receiving veterans benefits.
An academic year consists of three terms of instruction, during which a full-time student will complete at least 36 credit hours. Thus, enrollment status is defined as:
Full-time: 12 credit hours per term Three-quarter-time: 9 credit hours per term Half-time: 6 credit hours per term
From the US Department of Education:
Reported by the school the student attended, indicates whether the student is (or was) full-time, three-quarter time, half-time, less than half-time, withdrawn, graduated, etc.