"Discrimination of any kind against a country, private person or group of people on account of ethnic origin, gender, language, religion, politics or any other reason is strictly prohibited and punishable by suspension or expulsion, " it reads.

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Not surprisingly, there is a keen interest in this nowadays but also, in particular, from parents of Chinese origin who want to pass on the language to their kids.

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In addition, even if an English-only policy is adopted for nondiscriminatory reasons and applied uniformly, the Equal Employment Opportunity Commission (EEOC) and some courts take the position that such rules burden national origin minorities because they prevent many members of these groups from speaking the language in which they are best able to communicate.

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The Convention against Discrimination in Education stipulates that all persons, regardless of race, colour, sex, language, religion, political or other opinion, national or social origin, economic condition, or birth, have the right to receive an equal standard of and access to education at any level.

UNESCO: UK National Commission for UNESCO - UNESCO Conventions, Recommendations & Declarations in the UK