Law and med school admissions are quite different from PhD admissions. Great MCAT or LSAT scores are critical. However, MDs from any accredited med school will get a job. Lawyers have a harder time if they didn’t go to a top law school. There are a lot of nuances to grad school admissions.
Master’s programs are generally easier to get into, but not funded like PhD programs are. A PhD student will take 5-7 years to finish, but be paid by the school to teach and/or research, and get free tuition. Most master’s students pay to attend their programs.