College Didn't Enter me into Cambridge Admissions ExamWatch
For normal GCSE/A-Level exams the first deadline isnt actually a deadline it just means 'if you book after this date you have to pay a bit more' and then the second deadline is the actual DEADLINE deadline.I don't know if this is the case for this assessment but if it is, the sooner you contact your school the better. Email them tonight right now explaining it and also saying that you will call the school tomorrow mprning (or speak in person if you are attending school normally) to ask about it and try to find some solution. If there is a 'late entrance' fee, the school should pay this. If there isnt a second deadline and its the full deadline deadline, then unfortunately there wont be much i can imagine.