CRC/C/DNK/CO/4 provide children diagnosed with ADHD and ADD, as well as their parents and teachers, with access to a wider range of psychological, educational and social measures and treatments. The Committee also recommends that the State party consider undertaking the collection and analysis of data disaggregated according to substance-type and age through its national substance abuse hotline (Giftlinjen) with a view to monitoring the potential abuse of psycho-stimulant drugs by children. Standard of living 53. The Committee expresses its concern that a significant number of children are reported to be living in poverty in the State party. The Committee is also concerned at the effects, particularly on children and women, of the so-called 300-hours rule (as of 2008, the 450-hours rule), which, inter alia, results in the reduction or withdrawal of supplementary benefits to married couples who have received benefits for two or more years but have not individually worked for a minimum of 450 hours under normal employment circumstances. In particular, the Committee is concerned that this rule frequently has the effect of primarily and disproportionately affecting women of ethnic minorities with serious repercussions for their children. 54. The Committee calls upon the State party to reinforce its efforts to provide support for economically disadvantaged families, including children of single parents, children of parents on State welfare, and those of newly arrived families, and to guarantee the right of all children to an adequate standard of living. The Committee also recommends that the State party monitor, in cooperation with local authorities, the effects on children and women affected by the 450-hours rule and take measures to ensure that they are not subject to social inequality and exclusion. Furthermore, the Committee urges the State party to take measures necessary for the comprehensive collection and analysis of data on child poverty, including in Greenland and the Faroe Islands, in order for it to be effectively addressed. F. Education, leisure and cultural activities (arts. 28, 29 and 31 of the Convention) Education, including vocational training and guidance 55. While welcoming initiatives such as the “Watch out for bullying” and “Together against bullying” campaigns and the high percentage of schools with a plan of action to address bullying, the Committee is nevertheless concerned at the prevalence of bullying in schools and at the lack of clarity in the law as to the responsibility of school authorities and follow-up action in cases of failure to comply the plans of action. The Committee is further concerned that, under current education programmes, only children of European Union or European Economic Area citizens are entitled to mother-tongue instruction. Formatted: Highlight 56. The Committee recommends that the State party continue and intensify its efforts to prevent and address bullying in schools, particularly by introducing a range of educational and socio-pedagogical methods involving parents and an appropriate monitoring of school plans. It also recommends that mother-tongue education be reintroduced for bilingual pupils who do not receive municipally organized mothertongue lessons. 11