This government's Levelling Up mission for schools is that, by 2030, 90% of children will leave primary school having achieved the expected standard in reading, writing and maths, up from 65% in 2019. In addition, this white paper sets an ambition to increase the national GCSE average grade in both English language and in maths from 4.5 in 20193 to 5, for all secondary school pupils by 2030. In this report it is estimated the economic returns associated with achieving these ambitions. To achieve the Levelling Up mission, around one in four pupils will need to make sufficient improvements in Key Stage 2 (KS2) attainment by 2030 to reach the expected standard. It is estimated that the size of the attainment improvement will need to be equivalent to 0.87 of a standard deviation, or around 10 months of progress.