Goal of Teachers Unions:
1 - Maximize teachers pay
2 - Minimize their actual hours worked
3 - Reduce their actual workload
4 - Eliminate accountability
5 - Institute strict work rules so that more union teachers are needed to do the same amount of work
I think, based upon Wisconsin and Michigan, just to name two, you missed several more goals;
6. Keep the union-protecting 'closed shop' which requires all workers to pay to the union.
7. Expand the franchise by including more peripheral jobs to be union members, thus more money in union dues.
8. Set up captive Insurance and health organizations that the public has to pay for in the union contracts that funnel even more money to the union.
Gee, amazing how it all ends up with more money to the unions! FYI: there was a time when the USofA had the best education system in the world but that was before the unions like AFT and NEA! What a surprise!