Year 12 and the boyfriend

I'm presently in Year 12 in Australia and I have been seeing my boyfriend for nearly 3 months.. we started seeing eachother a week into last term and I've gotten my results back.. all of which are significantly worse.. 
This is my final term of year 12, my final term of school and my education is incredibly important to me.. The women in my family have a history of choosing men over careers and education and I don't want to be another one.. However after speaking to my boyfriend he wants to make it work and push me to boost my marks and cut back our communication time and the time we see eachother.. 
He graduated two years ago and did really well, so he knows what I'm going through.. However I don't know what to do and I really need some advice..