241.2. In the case of a child who has not achieved the objectives of preschool education, the school board may, following a request giving reasons therefor made by the parents and subject to the terms and conditions determined by regulation of the Minister, admit him to preschool education for the school year in which he would be eligible for admission to elementary school education, if there are reasonable grounds to believe that such measure will enable the child to join a regular class at the elementary level.