An acronym for spelling, punctuation, and grammar. The 2014 UK National Curriculum formally refers to GPaS, with the same meaning, and Englicious opts for the formal appellation. SPaG has become the common colloquial term among many teachers, educationalists, and publishers.
At the end of year 6, students are required to take a GPaS exam. Resources for exam prep can be found on Englicious in the Level menu, under the heading Y6 GPaS Test.