Today is Thursday. Today is 'hole' day. So, naturally, everyone is wearing their 'holiest' clothes.Even the class teacher, Mrs North ...But she is soon to find out from Principal McCabe that a surprise visitor is coming to the school.In fact, the President of the United States is on his way. And there's no time to change! What questions will Marvin get to ask the President? And, with all the television cameras pointed, will he solve his biggest maths problem to date?This book is full of surprises but, yet again, Louis Sachar delivers a thoughtful and vibrantly funny story in this, the fifth of the series.