I met him eight months ago at a school party, and our relationship has grown tremendously since. We're thinking of getting married soon after we finish our exams at the end of this year. However, given your age and situation, it would be advisable to slow things down. There is much to think about before you make a commitment to another person. It is better to let your relationship develop slowly but steadily, than to make promises to each other that will be difficult to keep later on.
Life nowadays is complex, and demands many skills and capabilities from individuals.
As an adult, you will have to live out multiple roles, as spouse, parent, employee, supervisor, citizen, etc. To be able to make an effective contribution to your future family and to society, you have to be adequately prepared. This preparation is not just getting academic qualifications or going through a vocational course in a post-school institution. There are many developmental tasks that each maturing young person must undertake in order to be successful and productive. A simple way of putting it is to say that you need to become more mature.