I think that the financial aid information needs to be made available to the students so that they know where to get it, but there should not be a lot of financial aid lecturing during school time. Many large high schools have very diverse income levels, and it would be awkward for a kid who has been told by his parents that he is absolutely full pay to listen to a 30 minute lecture about how to get a Pell grant.
Financial information for parents is great during evening meetings.