[Odd Future]

So, a few weeks ago, A girl was mad at me ( It was my ex girlfriend)So she started to hit me, and I punched her back,
once, which doesn't make it right. but I did, when I got out of jail (after a week)
she got her friend to fight me over it, I slammed his head into a locker, it left a knot in his head and I got charged for
Domestic Violence
Assualt

And I went to court last friday, got 6pm curfew unless with guardian, And have to go back June 7th,
but the problem is, I smoked weed a few days ago or so,
And I know weed says in your system for a while, How can I pass this drug test? or atleast get them to not put me back in, my dad has expirience with being arrested, and the law, so he said just to say I tried it about 3 weeks ago, Will this work?