Nancy Flanagan, a teacher with more than 3 decades of experience, a National Board CertifiedTeacher, says that tenure does not make it impossible to fire bad teachers. She knows. She has seen it. She says the cover of TIME was far worse than the article (true).

What good is tenure? It creates a fair process for decisions about termination.

She writes:

“As a long-time classroom practitioner–going back to the early 70s–I would say that this recent tidal wave of entrepreneurial experimentation with the purposes and structures of public education is the single most dangerous issue facing American families with children. When deep-pockets venture capitalists start thinking they can run an essential public service more “efficiently,” look out.

“Here’s the funny thing. Teacher tenure has never really been a fortress that protects incompetent hacks and abusers. It has functioned as a set of rules by which undesirable teachers could be–fairly–jettisoned, then have the decision to release that teacher stand. It gave teachers a reasonable period of time to establish their long-term worth (with the option to open the trap door quickly, in the early stages, for egregiously inept or shady folks). It also gave administrators and school boards a defined set of reasons why a teacher might reasonably be let go, after the district committed to hiring him.

“How do I know that it’s not “nearly impossible” to fire bad teachers? Because my medium-sized, semi-rural district did so, repeatedly, during the 30 years I worked there. The tenure system worked there, long before state-mandated, data-driven, high-tech teacher evaluation models were established–when we were using what everyone now describes as meaningless checklists. It worked when the probationary period, set by the state, was two years but it worked even better when that probationary period was bumped to four years–more time to evaluate a new teacher’s worth as a classroom practitioner, and make a good decision for the long term.”

She adds, in this thoughtful article:

“”Unions protect bad teachers” is a false meme. Unions also protect good teachers. Unions protect students from tech millionaires and venture capitalists, and having their personal worth, and that of their teachers, evaluated by test data.”

The TIME article ends by citing a growing number of studies that show how flawed test-based evaluation of teachers is.

We all need protection from the whims of tech billionaires, who are using their wealth to control our public institutions, even the electoral process. Our best line of defense: get out and vote.