Help, my male teacher is creeping me out !?

Okay this has been gone for a year and now it's getting worst.

I'm 15. He's like idk, 40+ i think. Yucks. he's not married. he always look at me and he told me I'm pretty. For months now, he's been texting me everyday ! i'm so scared. in school, everytime i walk to my class, he would wait for me to just walk with him and i just would go to the crowd and be far from him. he would call me when he sees me walking alone. when i went to the school trip, he keeps taking photos of me. he didn't even take pictures of anyone else. yesterday he text me and he said do u want to go for camping and i said can i take my friend along. he said no you cant, she's not a member of the club. i said okay so i wont go. then he said, no sue, you can bring her along, it's fine. as long as you go. please go it wouldn't be fun without you, sue.

omg, he totally creeps me out. he keeps on texting me without nothing important to say, keeps calling me to talk to him and keeps staring at me. it's so scary. i don't know what to do. HELP !
HE WAS MY MY CLASS TEACHER LAST YEAR AND I THINK HE WOULD HAVE GET MY NUMBER FROM THE STUDENTS' INFORMATION FORM. EVERYONE HAS TO FILL THE STUDENT INFORMATION FORM.
HE WAS MY CLASS TEACHER LAST YEAR AND I THINK HE WOULD HAVE GET MY NUMBER FROM THE STUDENTS' INFORMATION FORM. EVERYONE HAS TO FILL THE STUDENT INFORMATION FORM.