I doubt they received an admissions pre-read either, but that is possible. More likely is that the coach looked at the transcript/test scores and knows it’s good enough to satisfy admissions.
Student athletes in most sports can verbally commit to Ivies at any point during HS, but some commits fall out because they can’t keep their grades up (or hit a certain test score in pre-covid times). Verbal commits are not binding on either party.
When it comes time for the committed student athlete to apply in fall of senior year they have probably received a positive pre-read from admissions, and then it is highly likely they will receive a likely letter prior to admission decision day, and an acceptance on decision day. But nothing is certain until the acceptance letter is in hand (or in the portal, lol).