Because using generic terms would not capture my horror and distress about the way elementary school children are treated in American. While I respect your right to disagree with my feelings, you do not have the right to insist that I not express my feelings with the term “jail school”…which I think is quite accurate. You are not required to share my sense of humor.
If you wish to call public education “paradise school”, I’ll giggle a little, but I will defend your right to your opinion. “efficacious school” and “power school” will be regarded similarly. “Freedom School” might cause me to guffaw, though, be warned.