It really depends on who you talk to. I know about 150 teachers and I would say the majority aren't against common core.
To answer your other question common core is a new way of teaching core subjects that is less dictated by content standards, framework and textbooks and more about in depth knowledge and focuses more on discussion and teaching peers than lectures, homework and assessment. Older teachers are more likely to be against it because it goes against the way they've had to teach their entire careers. It's not that teachers are against it, they just realize it's going to be a pain in the ass to transition to common core.
Get there somewhat early. Find a target who isn't with a group of friends. Play pool, shuffleboard, etc with her just drink up with her and make sure the crowd knows she's with you. That's worked for me but it hasn't always been with a 10/10 if you know what I mean. Smoking hot chicks don't go to the bar alone unless they're hardcore alkies.
Maybe bring up the cougar thing with a married guy you know is a big mouth and/or someone who knows the bar scene.
I would still hit up a few bars you know are open until last call. Cougar sluts like to think they're young and hang out where they'd think young sluts would.
This also worked for me: joke with one of your single friends whom you know is a big mouth. Tell him you were at bar x and you saw a bunch of cougars. If he's a big mouth he'll say something like "oh yea there's always cougars at bar y"