I am a teenager and I like my physics teacher who is 20 yrs older than me.she is married.I like her a lot but it doesn't mean I want to keep relations with her in some other way.iwant her to make me her favourite student.I was her pet for last 2 yrs.but I don't know what is happening to her nowadays.she doesn't even look at me.but once I met her out of the school with my mom she talked with me very nicely.
You need to keep it a strict student and teacher relationship. On top of that she's 20 years older than you and can also lose her job if any actions were taken anyway.
Keep your mind focused on school and you can continue to think how you want but just know that nothing can happen until you graduate at least that is but even then, she'll probably be old and wrinkly lol. Just saying!