1. Education or training that is mandatory and required by law or regulation, typically referring to mandatory schooling or required courses
Compulsory instruction in mathematics is required for all students until age 16.
A instrução obrigatória em matemática é exigida para todos os alunos até os 16 anos.
2. Mandatory teaching or learning that must be completed as part of a curriculum or legal requirement
The state mandated compulsory instruction in civics for high school graduates.
O estado mandatou instrução obrigatória em educação cívica para graduados do ensino médio.