My son will be in Yeshiva at the end of August for the year.

A family member uses Dr. Fund,t and I and family mostly get along well with Meuchedet, some prefer Clalit. Also work out where chosen specialist works most often because not every clinic has good or any availability of specialists. If you have any family or other resource attached to the yeshiva or the yeshiva community, it would be well to seek there.

I do not know how it works for foreign students, my experience with it is as a citizen with a family. Meuhedet has very good doctors and very good clinics, and is probably the largest kupa in yerushalayim with an extensive network of doctors, clinics, etc. A particular specialist might work limited hours in specific clinics, which might not be nearby. Yes, it is good enough, I have been happy with the care my kids get- whether it is for simple things like strep, or more complicated things. But like all kupot, the wait time for specialists or certain tests can be quite long, and not everything is always covered (that will be true for all the kupot, the Health Ministry sets what medicines and treatments are covered). Also new members have a wait-period (can be as long as 6 months) until certain benefits are available to them- for instance, if you sign up to one of the higher coverage plans, like C, then you have to wait for some of the increased benefits to kick in. you would have to look into whether that applies to your son as a student. If your son has a known medical condition, you should have some idea of what sort of medical care, medicines, tests he needs regularly, and you should ask specific questions whether these are covered.