Before 1066 he studied with Lanfranc at the abbey of Bec and then in Paris.

By about 1078 he was Prior of the collegial abbey of Saint Quentin in Beauvais.

He was elected Bishop of Chartres in 1090 (he may have been proposed as early as 1089; the election must have taken place in 1090 as Ivo was elected and invested by the king before he went to Italy to be consecrated in November 1090 [JL 5438]. He returned to Chartres early in 1091; on his way back he in stopped in Lyon. In April 1091 he was at Vendôme --I am indebted to Christof Rolker of Cambridge University for these details).

In 1092 he became embroiled in a serious dispute with King Philip I, who had taken up with and married Bertrada of Montfort, wife of the Count of Anjou.
Ivo carried the case to the Council of Beaugency in 1104.

At some point soon after his assuming office Ivo carried out a "reform" of the collegial abbey of St. John's of Chartres ("Saint-Jean-en-Vallée"), probably along the lines of "regularisation" of collegial life which he knew from his days at St. Quentin's.

He died in Chartres, according to the cathedral necrology, on 23 December, either in 1115 or 1116.  He was burried in the Collegial of St. John's, as we are told by the necrology of that abbey.

• The Catholic Encyclopedia has a good --though somewhat dated-- article on him by the emminent theological scholar J. de Ghellinck.
• For a good summary (in German) of his writings and an excellent recent bibliograpy, see the entry in Bautz’ Biographisch-Bibliographisches Kirchlichen Lexikon (http://www.bautz.de/bbkl/i/ivo_v_ch.shtml ) (Band XVI, 1999), by  Klaus-Gunther Wesseling. 
• A new edition of Ivo's Panormia by Martin Brett and Bruce Basington is in progress and will eventually replace the old one in Migne.  Professors Bret and Basington are to be commended for making their preliminary work available for downloading to all.