Nothing wrong with that, George, IF that's all it did.
Unions, like corporations, or Government, are neither inherently good nor evil.
The merely exist as artificial entities, acting as part of the overall system of checks and balances of power.
What IS objectionable, is when unions are hijacked and begin promoting political agendas that do NOT necessarily represent the immediate interests of their members.
But, the educational unions have NOTHING to do with bettering education, but with filling the union coffers, getting high pay and perks for union leadership, and making teachers fat and happy {more pay, fewer hours} at the expense of the private sector taxpayer ONLY.
By the way, I meant to "ping" you to Post 30 on the United airlines thread, but "missed". Peace and love, George.