I personally wouldn't do it. We charge a yearly membership fee to cover insurance, but there is no contract as such.
Having said that, I don't see why it is so bad. Gyms do it, so why shouldn't MA schools? As long as the contracts are legal and reasonable then I don't see a problem.
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Behold, I see my father and mother.
I see all my dead relatives seated.
I see my master seated in Paradise and Paradise is beautiful and green; with him are men and boy servants.
He calls me. Take me to him.