Surprising but academics seems to be the focus of this fraternity. Benefits include tutoring . He chose to pledge there because of the high Gpa AROTC and ROTC role models. Academics is his priority.
Both of my sons joined Fraternities, the same one actually.
There has been a lot of discussion on this board about joining Frats, it all comes down to the individual greek systems at each school. Some schools have terrible reputations in regard to Frats, some have great reputations. A couple of the schools my sons looked at early on had greek systems I would have highly advised against. The system at my son's school is pretty good, sure there are some less then stellar houses and I made sure the boys did their research before pledging.
The Frat they chose has a much higher GPA average then the overall school GPA. The house has there own OML so to speak based on GPA, room selections, leadership positions, are among the things that are based on GPA. Mandatory study hall for all freshman, 2 hours a night. Grades are submitted each semester, if they fall below a certain GPA they are on probation, miss that GPA again and they are out of the house. Minimum GPA to live in the house is 3.0, if you have a 3.0, well your going to get the bottom choices on most everything. The average GPA in the house is 3.3.
One thing to remember, while doing color guard may get similar points as outside activities on the OMS score sheet, placement on the battalion OML counts for a lot of points as well. Many battalions will look at various things when placing the cadets on the battalion OML, outside activities count.
Being a member of color guard counts, being the color guard commander counts more. Not every cadet will get the opportunity to be in that type of ROTC leadership role. A Frat can give a cadet an opportunity to have leadership roles that they may not get in ROTC, especially in a larger battalion.
Being in a Fraternity can also give a cadet broader exposure to school and another peer group. Some of my son's best friends from school have been from his Frat. The kids learn that there is life outside the military and it's possible to balance both.
Point is, not all Frats are created equal, it really depends on the school and it's greek system. Fraternities are not for everyone, and not every Frat is a good one.
Sounds like your son found a good fit, he'll have a blast I'm sure.