So I've spotted a girl I used to go school with (one of the hot ones) going in and out of some acting classes near where I work.

I wasnt sure it was her so I didn't approach but have seen her more than a few times now and its her for sure.

I want to approach her next time I see her. I am pretty sure she will remember me, we did have some banter together at school.

Couple of questions,

should I let her know I remember her name ? Or do a "ohhh I remember you......errrrrrrr let me see xxx right?"

How long can you stop sombody on the street for a chat before its too long?

Should I focus on our shared experiences or what we have done since?

First question... what do you want to gain out of the approach?

_________________
We are here for a Good time, Not a long time.
Chick Count - 190

Ultimately to exchange contact details and meet up again. I dont expect to get an instant date.

Pretend as you dont recognise her, smile once or twice then leave it as that. She will be thinking the same thing.
Hopefully SHE will come over to you and then you say 'Oohhh i remember'
Then build rapport and create IOI's then bing bang bosh

_________________
We are here for a Good time, Not a long time.
Chick Count - 190

this is basic social skills

yes, tell her your name so she can remember (but dont intro yourself)

you can talk as long as you like