Te espero en Junio
 

Te espero aquí is a kind if theat, used for example when students behave badly and we say te espero en Junio, meaning I´ll be very strict with you in June giving marks.
ENGLISH?

"See you in June" with a sarcastic tone:?: :thinking:

I don't know that there is an equivalent phrase in pedagogy here in the US. In fact, I'm not sure if this has always been the case, but these days it is VERY bad practice to allow grades to reflect punitive consequences for ill behavior. Now, if a student isn't working to their potential, we'd say that the results will be evident in their grades. "You'll see the results of not doing homework when you get your report card....."

You don´t lower their marks but you don´t help them pass by correcting them in a more generous way. It´s not to punish them , it´s a question of feeling yourself better and take a kind of "revenge" so to speak. I don´t know if I make myself clear.

You are clear. But in the US you can not assign grades to "make yourself feel better" or for "revenge" or even threaten to do so. Grades are to represent ability. There are other consequences for behavior issues, so it's not that I'm "not doing them any favors". It's just not done here ... grades and behavior consequences are not supposed to overlap wherever possible.