For most students, especially ones who haven't worked in the first two terms, the Christmas tests are the first real indicator of how well (or not!) you're doing. It's important not to get too stressed. Try to relax while doing the exams and you will do a lot better. Don't put too much pressure on yourself and remember it's always good to talk to your friends about exam stress.
2. Don't let the Christmas tests disrupt your overall study plan
At the end of the day, Christmas tests are just very watered down mocks. It's more important that you are prepared for the mocks than to spend too much time on Christmas exams. Most teachers only examine material covered since September so you are only really being tested on one quarter of the course. As with all exams, the best revision you can do is by testing yourself by practicing past questions once you have learned the material. Getting a full access Studyclix PLUS account will help you properly prepare using past exam questions.
3. Are the Christmas tests a waste of time?
Not at all. The more times you simulate exam conditions, the more comfortable you will be in the main exam. Doing tests in school teaches you how to concentrate in an environment similar to the one you will experience in the main exams.
4. Get the basics right
I know you have probably heard it a million times from your teachers and parents alike but getting the basics right is a big part of doing well in an exam. Read every question carefully and underline keywords. Do not leave out any parts of the question and if you can't think of anything to write sketch out a mind map or spider diagram and you'll be surprised at how much comes into your head.
5. Don't get too worried about your result
Remember, these tests are corrected in-house by your teacher and while a good benchmark, they are not an accurate indicator of how you will do in the exams in June. If you do well, keep working and If you did badly, don't panic, there is still time to turn things around.
Best of luck and happy Christmas!