The Winter 2018 edition of the Dutch Journal of Applied Linguistics (DuJAL) is now out, dedicated to research into the processes and outcomes of CLIL and bilingual secondary education (tweetalig onderwijs – or tto) in the context of the Netherlands. Now entering its 30th year, Dutch bilingual education continues to thrive in terms of both practice and research. This Special Issue, edited by Dr Tessa Mearns (Leiden University) and Professor Rick de Graaff (Utrecht University),