Factual error: It is stated that Miss Trunchbull competed in the Olympics in shot put, javelin, and hammer throw. According to her jersey those were the 1972 Olympics. The hammer throw wasn't added as an Olympic event for women until 2000.
Factual error: Matilda searches for a library in what looks like the yellow pages. 'Library' is first under the 'L' section. Library starts with 'li'. Surely there would be something beginning with 'la', which would be before 'li'.
Factual error: When Miss Trunchbull gets pushed onto the globe by the boy she just threw out the window, it shows Japan south of Asia. Japan is really east of Asia.
Suggested correction: Japan is shown correctly, with Korea west of the south part of Japan, China west/southwest of Korea, and the Philippines to the south of Japan. You can also see the Russian island and peninsula just north of Japan. It is a real globe.