I've had a few threesomes and a few foursomes, it's overrated.
Yes, I guess I'd rate her as a 6 and myself at about 7.5. She's about a 6-7 in terms of looks (body 7, face is 6), I give her a little bit of bonus for teacher (good for future), no kids, sexually submissive in bed (anal/gagging), but take away more because she is a little eccentric (in that crazy high school english teacher kinda way)/talks to her cat regularly even when not alone (and cat litter spread all throughout her house from her half-feral feline and it doesn't bother her), and because she dresses like a teacher too (intentionally and not interested in changing ie: not good arm candy in public), and she equally has little social life outside of dating.
I'm about a 7 in the looks department on a REALLY good day, and then having an amazing job/no kids/experience with women/redpill game bumps me up about a point, but a poor social life pulls me down a little. I've fucked quite a few 8s, but 9s and 10s just aren't interested, so I need to either up my game or up my looks, right now I'm working most on the looks portion of my life, lifting weights regularly since June... Biggest thing for me now will be cutting down below 20% bodyfat. Ideally I'd like to get down to 12% or so if I'm dedicated enough / have enough willpower.