James and Lily, were how old, exactly?

[ghinghapuss]

No: HPFGUIDX 88762

> Carol wrote:
><snip> ....Lily may have been even younger. I don't think we have 
any canonical evidence to indicate that she was in the same year as 
James. (Or is she wearing a Prefect badge in that scene?)

Mandy here:
I believe they were in the same year as James and Lily were Head boy 
and Girl together. So unless she was moved ahead a year.

Or, it's occuring to me as I write this, that they could have been 
Head boy and girl in different years???  

Can anyone remember the quote about James and Lily both being Heads? 
And was it mentioned they were in the same year?

Mandy