Chris visited the College to address an audience of over 130 pupils and staff in Main Hall and answer a series of probing questions.
He started his talk by giving a brief outline of his role as Leader of the House of Commons, which ranges from setting the order of House business and answering questions on a Thursday morning, to planning the renovation of parliament.
The floor was then opened to discussion with topics ranging from NHS spending cuts and adequate funding for flood prevention, to immigration and the cost of housing in the south east.
Inevitably talk turned to the EU and a discussion of the implications for business if the UK elects to leave and what sort of concessions David Cameron would have to win in order to make Mr Grayling, a leading Eurosceptic, vote to stay in.
On a lighter note, the session ended with My Grayling being quizzed about how the government would handle relations with the US should Donald Trump be elected President.