I am a good student and earlier today went home early and got chased by the teacher up the corridor?

I am a teen and earlier today I walked out of a lesson as soon as the bell went before the teacher let us go. I heard him shouting to me and a few others who walked out on the bell "Get back here now!" but I disobeyed and ran off. I am a good student a recently in the same lesson received my science test results which was 32 out of 50 (the highest in the cl as it is the third set). I am worried about the consequences and ask what to do tommorow as I have science second lesson (bearing in mind with the same teacher who I disobeyed). I'm not sure if he even saw me running up the corridor.