I'd never given it much thought when I started driving (first licensed in 1969), since I'd learned a manual shift on Dad's Herald long before I ever got out on the road; I was used to it and didn't give it a second thought. However, I later took several undergraduate and graduate-level courses in Traffic Safety Education, did some student teaching of same and spent a year -- part-time -- teaching new drivers at a commercial driving school. Then and ever since, I came to understand and ultimately endorse the advice of my college professor/mentor (highly respected nationally in traffic safety): teach the student to drive first, THEN teach them to drive a manual shift! I think it's even more important nowadays, as traffic seems to increase more and more and, with that, the ratio of bad drivers to good drivers is skewing further against us all. :frown:
One possible alternative is to get in lots and lots of practice on private property or in very large, deserted parking lots, to the point where starting, shifting up and down, and stopping are totally natural...and THEN try public streets and roads. This is also what I did with both my daughter and son, albeit with an automatic (both passed road tests first time with NO problems). I think it's critical that the student driver be completely comfortable in, and with, whatever car they're using to learn.
One other thing: regardless of how much the student likes the car or thinks he/she is comfortable driving same otherwise, it just might not make an ideal learning experience for mastering the clutch and shift. If mastery quickly yields to frustration and there is another manual shift car available, give it a try. Case in point: once attaining his license, my son attempted to master the manual shift in his mother's old Saturn LS...but it drove (no pun intended) him crazy. Not that it was especially difficult to drive, but there was something about it that frustrated him. Taking a cue from thousands of student drivers in England in the 1960s, I took him out in my Herald...20 minutes later, he "got it" and never had problems again. I'm not saying the Herald is THE ideal car for manual shift lessons, but it worked for him. Maybe it fit him better, or maybe the angle of the pedals was better, or ???? I don't know. He was a bit fearful of doing some harm to the clutch, gearbox or other parts of the car, but I assured him that my barn full of parts could deal with pretty much anything that might happen (nothing did)!