Suranaree University of Technology has employed the trimester credit system since 1993 for more efficient use of time, and to avoid the semester systemus summer session that usually is only half of the regular term in
duration. The trimester system also enables students to take advantage of the cooperative education and career experience, so that they have sufficient time in the work site.

In 1998, the university adjusted the 14-week trimester to the 13-week trimester for more flexibility and efficiency in its instruction and management so that SUT graduates complete their education at the same time as those of other institutions. In addition, the academic calendar can be scheduled to avoid the official holidays; the inter-semester breaks get longer; and the credit system can be arranged to correspond to the
standard criteria of the Board for the Control of the Engineering Profession (B.E.)