Convention against Discrimination in Education and if the education provided conforms with such standards as may be laid down or approved by the competent authorities, in particular for education of the same level. Article 3 In order to eliminate and prevent discrimination within the meaning of this Convention, the States Parties thereto undertake: (a) To abrogate any statutory provisions and any administrative instructions and to discontinue any administrative practices which involve discrimination in education; (b) To ensure, by legislation where necessary, that there is no discrimination in the admission of pupils to educational institutions; (c) Not to allow any differences of treatment by the public authorities between nationals, except on the basis of merit or need, in the matter of school fees and the grant of scholarships or other forms of assistance to pupils and necessary permits and facilities for the pursuit of studies in foreign countries; (d) Not to allow, in any form of assistance granted by the public authorities to educational institutions, any restrictions or preference based solely on the ground that pupils belong to a particular group; (e) To give foreign nationals resident within their territory the same access to education as that given to their own nationals. Article 4 The States Parties to this Convention undertake furthermore to formulate, develop and apply a national policy which, by methods appropriate to the circumstances and to national usage, will tend to promote equality of opportunity and of treatment in the matter of education and in particular: (a) To make primary education free and compulsory; make secondary education in its different forms generally available and accessible to all; make higher education equally accessible to all on the basis of individual capacity; assure compliance by all with the obligation to attend school prescribed by law; (b) To ensure that the standards of education are equivalent in all public educational institutions of the same level, and that the conditions relating to the quality of the education provided are also equivalent; (c) To encourage and intensify by appropriate methods the education of persons who have not received any primary education or who have not completed the entire primary education course and the continuation of their education on the basis of individual capacity; (d) To provide training for the teaching profession without discrimination. 5 I.A.1