Weird question .. I am just really confused

Weird question .. I am just really confused

I found an ad on Craigslist about a man looking for a tutor for his 14 year old son. I responded and he picked me. He asked for my mailing address to send the money and I gave it to him. He said he will send a money order and I should deduct the $300 for the tutoring and then send the rest to his nanny, which I found really strange. Why would he send me a check before the tutoring took place? It kept getting pushed back and then he called me at 1:00am. I could barely understand him and his thick accent and he was just really creepy and asking me if I received the money order. He called like every day since then (from a restricted number this time) and kept asking me, but I had not received it. I was about to forget about it. Then today i actually received it. It was for $3,000! He wanted me to deduct $300 and send the rest to the nanny. I just looked up stuff on money orders since i'm not really sure how they work and it says the limit is $1,000. Is this counterfeit? i don't understand why he is doing this. I think I am being scammed now! EDIT: Wow I feel like a complete idiot. I honestly have never heard of this before and I am usually very skeptical about scams. Thank you so much... wow. People need to find something better to do with their time. What a horrible person.
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