> ... couldn't get a job except in teaching.

Or nursing, or a fair number of other career tracks. Perhaps as important, there were plenty of smaller and family-owned firms. In many of those, talented women could get quite a ways ahead - though perhaps with less public acknowledgement than is currently fashionable.

> Now the sort of women who taught me in high school are federal judges and captains of industry.

Your HS teachers were in the 0.001%? No 2X, 3X, or even 25X to teacher salaries could replace a meaningful fraction of today's teachers with such people - because, by definition, the supply does not exist.