Transference

A few years ago there was a teacher (female) I got along great with and I developed what I think is transference for her. I idealized her; I'd reframe our interactions so it appeared as though she did more for me (and I meant more to her) than was reality, and I frequently fantasized about her (about her saving me, or me going to live with her, things like that). I haven't seen this teacher in years and though I still think about her sometimes, I can now view our interactions as they were - and also that she's not perfect.

Thing is, I recently started at a new school and I'm recognizing the signs of this happening to me with another teacher (male, this time). I'd really like to avoid the embarassment and upset and confusion that would come with this developing in the same sort of thing I had with that prior teacher.. but how do I do that?

I guess sometimes people can remind us of others at times as well as qualities about them fill a void?
It's good that you've recognized about yourself your strong feelings of your past and are more aware this time.
Sounds like you've grown attached? Consider the qualities that are causing the attachment and be aware.
As cliche as it is, sometimes people come into our lives as a season, reason or a lifetime.
Hope you sort through it.