Gee, I was annoyed when we stopped putting plus and minus on the report cards. How can the parents possibly know how well they are really doing if it is just S or U on the report?
Sounds like you will have to speak to the teachers if you want details on her progress. Make sure you call either before or just after school or during lunch breaks so you are most likely to catch them, otherwise ask when that specific teacher has their spare lessons and call then. In my experience, as long as you aren't calling to abuse them about something then most teachers are happy to talk to you.
Do you know if there is a year level coordinator? Sometimes parents can just contact them and they can get all the teachers to give them the info you are after and get it to you.