You know you are an IB student when...

It is the first day of classes. Your excitement for mathematics high level is all you have. You get into the room and the teacher starts speaking.

"Hello. Guys... Congratulations for taking this new challenge. Welcome to Mathematics HL course." 

"Wait, this isn't Biology class?" Exclaimed one student at the other side of the room. 

"Nope." 

"Oh sorry Mister." She leaves the classroom. 

"She got scared." the teacher said mockingly.