Kate Garraway has made an honest parenting confession, claiming she "failed" her kids when it came to homeschooling amid her husband Derek Draper's health battle.The Good Morning Britain host, who shares two children Darcey, 15, and Billy, 12, with Derek, touched upon the disparity in this year's A-Level grades between comprehensive and private schools.READ: Kate Garraway reveals the advice her dad gave to husband Derek before marrying herWATCH: Kate Garraway reveals the sweet words husband