No you don’t…especially not in the first place. Instruments can be very expensive and when you first start your lessons you don’t know how well you are going to get on. You can buy perfectly adequate instruments second hand either online or at music shops. Remember in the beginning you just need something to practice on so don’t spend too much. After you have been having lessons for a little while you can look at upgrading your instrument and selling on the original. The school can give you advice on the instruments when you are looking to purchase them.