This is the most recent one I could find:
VDARE.com: 01/01/08 - The Real Dropout Rate—And Why Some Students Should Drop Out Of School
then there is this one, which shows nothing near your claim of an average 50%
US high school dropout rate: high, but how high? | csmonitor.com
I keep looking, but there is nothing to support your claim.
So, you have made a clown of yourself.
Now, instead of personally attacking me perhaps you could clear up the rest of the crap you posted.
Better idea, get an education and come on back.