Social worker telling lies?

Me and my husband have put our selves forward to foster our granddaughter if our daughter fails her assessment. We are being assessed they had to send off for a report from our daughters school, anyway the report came through and the social worker said that our daughter has extra help for exams apparently the students have a two hour exam and our daughter has an hour extra to everyone else so my husband phoned the school and he was told that no one has two hour exams and our daughter has ten to fifteen minutes extra and our daughter has said the same also she is not the only one there are a few doing the same. So why is he saying this?