concretable
n.— «In the run for the money are 30 Palm Beach County Schools, including six from Boca Raton and Delray, which are in need of permanent additions to better accommodate the rising number of students. Calusa Elementary, Del Prado Elementary, Verde Elementary, and Waters Edge Elementary are all slated for additional modulars—classroom facilities that can be stacked on top of each other if need be—to replace the more expensive concretables, which cannot be stacked.» —“Classroom size reduction funds pending distribution” Boca Raton News (Florida) Dec. 9, 2003. (source: Double-Tongued Dictionary)
Further reading
Amid court-ordered busing in the 1970s, a middle-school teacher tried to distract her nervous students on the first day of class with this strange assignment: find a monarch caterpillar. The result? A memorable lesson in the miracle of metamorphosis...
There was a time when William Shakespeare was just another little seven-year-old in school. Classes in his day were demanding — and all in Latin. A new book argues that this rigorous curriculum actually nurtured the creativity that later flourished...