in 2012 and 2015 they had dropped again to the equivalent of the 2006 score.( the equivalent of)
nearly/over/under/behind
Most of them have an obvious bearing on the wider definitions of literacy mentioned earlier. In line with international trends and some other European national curricula (bearing)
positive/negative/aspect/ideas
Dyslexia is therefore unlikely to explain the PISA results for Iceland. (Dyslexia)