We're just in the process of setting it up at work. The schemes can vary a bit, depending on the employer - we're going for one where we pay a fee to an outside company to do all the admin, because we don't have the resources free to do it ourselves. They quote a typical "fair market value" as being "about £50". They are not allowed to write it into the hire agreement, as it then becomed a hire purchase, which is not tax deductable, but in practice the hirer of the bike will be given first refusal on the "sale" at the end of the agreement.
Chances are if she works for a school her employer is a local authority, who may well run their own scheme, in which case they may have already "sold" some, and might be able to give her an indication.
