I have missing work at school. What can I say so I don't get in trouble with my parents?

I might suggest that you are honest with your parents, or just get the work done before they even have to know. Talk to your teachers about the homework, get help with the assignment if you don't understand it and then hand it in (even if you don't get full credit). Don't keep putting it off and pretending like it was never assigned, and don't lie to your parents ( it will likely get you in more trouble than not).

Sorry, I hope this helps in some way!