Huh? Scripted? For my geometry class, I have 74 performance indicators that my students may be tested on during their state exam. Last Friday was the last day of the 3rd quarter. I have 8 weeks left. I'm done. I've frequently gone well beyond the curriculum and push students with much more difficult problems than they'd find on their state exam. I got to choose which textbook I was going to use - I rarely use the textbook. I have high hopes for about 1/3 of my class to get 100's on their state exam (my wife is going to kill me, because a 100% = dinner at a nice restaurant.) But scripted? Other than a list of 74 performance indicators, and needing to make sure I follow IEPs to the letter, I have complete autonomy in the classroom. My students just completed a video project for their last unit, learning how to use a variety of common software applications in the process to edit clips that they filmed, etc.
My physics class had fun today (next week is our Spring break, so this is the last day before a week off) doing a lab with jello jigglers by cutting them into lenses so they understood how lenses work via refraction, etc. Neigher are in the curriculum - jello jigglers or lenses (lenses were in the curriculum until about 8 years ago.) Again, autonomy in the classroom. Without tenure, there's no f-ing way I'm going to do anything other than teach exactly what I'm supposed to teach. I would fear going beyond the curriculum because some helicopter parent might complain that I'm making the course too hard for their child by going beyond the state curriculum so often.
While I'll agree - tenure makes it hard to get rid of bad teachers in schools, it's absolutely necessary to protect the good teachers. Furthermore, tenure is necessary for the good teachers to stand up to the administration when making decisions that are in the best interests of the students, particularly when standing up to the board of education when the board is charged with balancing the best interests of the children with the costs to the district. Without tenure, school boards, or rather, groups within the community could work to get control of school boards, not for the interests of the students, but for their own interests (most likely cutting taxes.) Without tenure, it's impossible for anyone to criticize their actions or take a stand.