Ooh, this one did get unexpectedly testy! I hadn't followed this one in a while.
I really don't know much about shorthorns, but most people trying to raise show cattle that haven't owned many bulls really don't know what a real bull is supposed to look like. I know what our herd bulls look like and the results we get out of their calves. AM looks to me like a good stout Shorthorn bull worth trying.
There is a lot of science to our business - and a lot of guesswork too. I've had legitimate steer jocks who are good people and sell lots of good calves leave calves in our pasture that went on to win breed championships at Texas majors. I had another guy (who didn't know so much) tell me how sorry the sire of one of those calves was (one of our herd bulls) during a visit at the end of winter. I don't think he'd seen a bull on native pasture at the end of a season he'd bred 50 cows. In my opinion you have to find good people you trust and trust their recommendations to a large extent.
Ag teachers anywhere in this country are a really hard working bunch for the most part. In Texas (probably everywhere else also) they are a very tight knit group. To a large extent, you aren't going to sell many showcalves without having connections with them. Unfortunately, many (not all) expect a cut if they send their students to you for animals. There is a lot of resentment from folks who have been on both ends of those deals. A few teachers have lost jobs who've tried that stunt on the wrong people. A lot of them do work a lot of extra hours for low pay and I can see where they need ways to augment their income especially if they are going "above and beyond". Plenty of them don't know two cents about breeding cattle though. Plenty wouldn't know a good steer if you gave it to them. There are lots of really good ones that can pass on a lot of practical knowledge also.
Our local ag program may not be as good as many when it comes to showing, but they turn out a bunch of kids that can darn sure judge pastures and hay - which is pretty useful in the long run. I wish my teacher had taught me that kind of stuff.