Parents suppressing the teaching
You should not be teaching your parents Buddhism. It is forbidden in Buddhism to teach others Buddhism; unless the other people request to be taught (AN 9.5). 

You should not be practising "zombie mindfulness" in sight of your parents because this will freak them out. As a Buddhist, your practise is to not cause harm or distress to others. In your parent's home, when with others, you should act naturally and normally. 

Apart from this, there is nothing stopping you from meditating in private and also practising right speech, right action &amp; right livelihood in public. 

Buddhism (DN 31) says your parents have the duty to train you for a profession, i.e., ensure you receive an education. Your Buddhism should not interfere with your schooling and education.