The end of the quarter is coming up, and after it ends, your grades are locked, and cannot be changed. So in order to ensure some good grades, I will give you some advise on how to end off this quarter.
For starters, you need to turn in all of your missing assignments. I know that it may be annoying and time consuming, or even a while past due, but those points from still turning the assignment in all add up eventually, and it could help your grade go up. Missing assignments are important to get in before the end on the quarter because teachers will not accept missing assignments after the end of the quarter that they were assigned in.
Another thing you could do is study. At the end of each quarter, there will most likely be tests in all of your classes. Studying for these classes can ensure that you know the material in that class, and also help you get a better grade on a test that you did study for rather than a test that you did not study for.
Also, you need to get your service hours in. The minimum requirement for a year is at least 20 hours of service, and there are 4 quarters in a year, therefore you need at least 5 hour each quarter. There are usually a lot of options all school year, but if you need just a little bit more service to reach those 5 hours, there is mass in the chapel sometimes in the mornings.