William graduated with a BA (Hons) from DCU and a B.Comm. (Hons) from UCD. He has taught Leaving Certificate Business since 1990. William previously lectured in Accounting in DCU and has extensive experience lecturing in UCD, NCI and GMIT for professional accountancy bodies, including the Institute of Chartered Accountants in Ireland. William is one of the authors of the 2015 Exam Times Business, Accounting and Economics supplement, published by the Irish Times.