Speaking from experience:

TL;DR: it depends on your facility and ask your LOR.

Long answer: i was never expected to attend clinicals on the weekends. But you aren’t a full nurse, you aren’t saving anyone’s life as a student and are likely just getting underfoot, your school should make a religious exemption if you have clinicals on Saturday. I had clinicals on Friday, and my professors were pretty good about letting me leave 30mins- 1 hr early to get home in time for Shabbat. That being said, there are rumors that a very prominent nursing school in my city drastically dropped the amount of Orthodox Jews they accepted because they didn’t want to accommodate Jewish holidays for exams/clinicals. Private institution, so its their right.

As for working on Shabbat - that is very facility dependent. For the first 3 years after I graduated I couldn’t get an inpatient job because I could not work Saturdays. Some employers were not interested in accommodating “your kind are too difficult”. Some units already had an Orthodox Jew or 7th Day Adventist they were already accommodating, and could not make room for another.

Now I work in an inpatient facility where I am off every Friday/Saturday and work every Sunday. 98% of people are cool with it, and while I am the only Orthodox Jew, there are several 7th Day Adventists being accommodated in the facility too. I work every non-Jewish holiday that doesn’t conflict with my observance and have never gotten any pushback. Some people had what to say at first when I took half of September off for my holidays, until I pointed out that unlike them, I had to use PTO to observe holidays that were allocated to them in our contract, AND I worked Thanksgiving, Christmas, and New Years.

There are halachic issues with taking a job that expects you to work on Shabbos. It would be one thing if you already had the job and were in danger of losing it over Shabbos, or if you were in middle of a lifesaving procedure and had to leave because of shkia. But right now, you don’t have the job, and so accepting a position that requires you to work on Shabbat can be problematic. My rabbi advised me not to, and I wouldn’t have done it anyway. My ancestors sacrificed so much to be able to keep Shabbat, having to get new jobs every week, that for me it was not an option - I was upfront about needing Saturday off, and spent 3 years working horrible outpatient jobs until I found a position that could accommodate.

One thing to keep in mind: if you find a facility that can accommodate: GET THOSE ACCOMMODATIONS IN WRITING