The Favorites Competition

I was walking by a group of my students from different periods when one student flags me down...

"Ms M. did you grade my poetry book yet?" - Student One 

"Yes I did, it was very well done." - Me

"It was the best wasn't it." - Student One

"She probably hasn't read mine yet though." - Student Two. 

"Ms. M, I'm your favorite student right?" - Student One

"Of my many favorites, you three are among them." - Me

"Yes but you can only have one ABSOLUTE favorite, and clearly that's me!" - Student Three