I just found out that my husband is having an affair. This isn't the first time he has done it and I have decided that I am done with him and I will be filing for divorce. We have been married 17 years and have 2 teenage sons.

7 years ago, I bought a young show horse and put it training with a professional. My husband has no interest in horses and has never even been out to the barn or to a show. I paid the horses expenses from our joint account however, I made more than enough money to pay the expenses every year.The horse has been a fabulous show animal and is now worth $200,000-300,000. He has now reached the top of his sport and I am going to sell him this year. It absolutely kills me that my husband may get half of the value of this horse that he has had NO say in whatsoever.

The money that I get from the sale was to go toward our childrens education (private high school and college).

I was thinking that I may sell it to my sister for $1000 and have her be the owner and sell it later this year. She could then keep the money in an account to be used for my kids education. I know there would be capital gains for her, etc on the sale of the horse but I was wondering if this is illegal and would the judge still consider it marital property if I sell it before filing for divorce.
BTW, only my name is on the registration papers of the horse.