Not very entertaining! It was rather painful to read at times. Large parts of it were incomprehensible to me and just went straight over my head. I couldn't cope with all the terms and jargon being used. After some interesting stuff earlier in the volume, it became very tedious to read.
I am most interested in the history of education in relation to Christianity, and there are sections on Jewish education and on John Calvin, as well as descriptions of the state of education generally at different periods of history in different countries. I feel sure that I could find the book useful and interesting if I was limiting myself to reading those sections relevant to my interests.
I don't know anything about the author but I did get the impression that Boyd might know what he was talking about when he dealt with Christianity. Some things he said gave me the impression that he could distinguish between nominal Christianity and true Christianity. He seemed to speak of John Calvin and John Knox in a very favourable tone.
Definitely not a book I will ever read again in its entirety, but definitely one that I would be happy to keep for reference.