Now once you are cleared at MEPS, you will be evaluated for academics, leadership, and physical fitness.
You need a 2.0 GPA from college to get on the board, but obviously a higher GPA makes you more competitive. YOU CAN HAVE ANY DEGREE. I also believe the Marine Corps does not care what degree you have. I had a degree in Music Performance. Go ahead and laugh. But here I am as a 1stLt telling you if you majored in underwater basket weaving, you may have a successful career as a Marine Corps officer.
Some degrees may come in hady for MOS selection at TBS. These are called "uniquely qualified" candidates. I'll find out more about this.
If you are an Air Contract, you will have to take the ASTB.
When I joined, I needed either the ASVAB or the SAT. I didn't feel like hacking into my high school SAT account using one of the names of our many family pets and submitting my lousy SAT scores, so I used my ASVAB scores that I had taken when trying to enlist with the Navy a few months back.
(Long story short: I did not know about the officer path. I attempted to enlist in the Navy, went through the whole ASVAB, legal, MEPS, etc. with a Navy recruiter. At MEPS, a random Marine said he heard I went to college and go officer. The rest is history, including my very disappointed Navy recruiter).
Anyway, my time to shine. I got a 99 AFQT (the percentile portion of the ASVAB) and a 147 GT score. I'm not going to pat myself on the back, because I took that test as a 28-year-old college grad, not a 17-year-old high school senior. I also used this app, ASVAB Mastery, and did EVERYTHING. All the sections. I did the math sections twice. It took me like 4 hours a day for two weeks. I AM NOT A GENUIS. A little prep work goes a long way. I had long forgotten the formula for the volume of a sphere, but the app taught me again.
I believe you need a 70 AFQT (Armed Forces Qualification Test) score, obviously higher the better. You'll need a 110 GT (General Technical) score.
The AFQT is based on 2 times the Verbal Expression (Word Knowledge and Paragraph Comprehension), and then Arithmetic Reasoning and Mathematical Knowledge
The GT score is a combination of the Verbal Expression and the Arithmetic Reasoning
The ASVAB has other sections, including science, mechanics, physics, etc. You'll get "line scores" in these but they don't count for AFQT and GT. These determine what jobs you are eligible for, but this is more for specific ENLISTED MOS. I didn't know this at the time of the test, and spent hours learning electronics and car parts. Oh well. I'm a better American now because of this.