What is STEM? Science Technology Engineering & Maths STEM is an acronym for science, technology, engineering and mathematics. STEM subjects are integral to the UK’s success: •the UK is the 6th largest manufacturer in the world •engineering turnover is £800 billion per year •the UK produces 10% of the world’s top scientific research. Whilst graduates can expect to earn £160,00 more in their lifetime than non-graduates, STEM graduates have the potential to earn more than twice this amount!