How to fight people/bullies who come in group with bats

Got into a fight with couple of guys now they are threatening to beat me up and i got no backup , im 16y/o knows boxing , 5'9 75kgs . Few days back they came infront of my school with a bat , there were 5 guys . Now one of the guy got connections and could bring in 20-30 more guys. They dont want to compromise and want me beaten up , whats the best possible thing i could do. •Edit--> Hii giving an update , so one of their guy came up to me and said to stop this matter cause it was going on from last 3 weeks , its over now!! I made out without any injuries less gooo!!!