“…Program development was guided by the Simple View of Reading theoretical framework ( Gough and Tunmer, 1986 ) and based on previous longitudinal and intervention studies suggesting a causal link between phonological awareness and letter-knowledge as prerequisites for reading and spelling across orthographies ( Melby-Lervåg et al, 2012 ). The LALA program differs from previous intervention studies from Germany and Luxembourg, which have almost exclusively focused on exploring the effectiveness of the German training program HLL (e.g., Schneider et al, 1997 , 2000 ; Plume and Schneider, 2004 ; Bodé and Content, 2011 ; Pfost et al, 2019 ) that was originally developed within a monolingual orientation ( Lundberg et al, 1988 ). Of particular relevance to this study is that in linguistically diverse students a “traditional” phonics-based instructional approach often may require adaptations, and phonological awareness and letter-knowledge should be taught within a broad language curriculum ( Stuart, 1999 , 2004 ).…”