Questions about agents for school shows

Perhaps agents 'guru' Labrug can answer this, but I'm sure some or many of you also know the answer: I'm looking at signing up with a local agent that specifically deals with organising tours of shows to schools. Although I won't be touring shows, but offering puppetry building workshops. I know of a number of agents who do this, so finding one isn't my concern. What I'm wondering is, does anyone know how to apply to one of these agents? I'm guessing it works similarly to getting a normal agent - sending in a CV and relevant info - but do you need to already have experience touring to schools (I have experience doing puppetry workshops, but no experience within schools as yet), a reel showing an actual workshop... do you have to invite the agent along to one so that they can see what you do? What's the best approach? Any advice would be very welcome, as I've never dealt with this agent stuff before :)