Character Ideas

I am planning on taking a slight risk when it comes to my characters. After doing a lot of character work, looking at how important a strong and developed character is, I have decided to have characters that the audience dont really meet. We're never going to find out the names, or really connect with each individual character. I dont even really want the camera to be on them for that long at all, just like panning shots etc. My reasoning for doing this is so that each audience member can connect to their own experiences as a child and the thoughts, feelings and emotions can be triggered straight from their memory, rather than someone else's story being told or them being spoon fed emotions that they're being forced to feel.
The actors I will use will be the appropriate age, so that its believable, but they're not the main focus of the film, I would rather focus on the imagery and the message that im trying to get accross. My main reasoning for this is so that the individual viewer will can  relate the action to their own experience of school and growing up.
Also because my film is a short film I think it would be harder to have a main protagonist, when watching a full length film as the audience we learn about the character and invest a certain amount of time in their story. In a short film you generally only have a few minutes to get accross the persons story, I just dont think it has quite the same effect.
Im luckily in the sense i'm still in education and my educational journey is still very fresh in my mind, so im able to draw apon my own experiences thay were fairly recent. However im aware that im very much caught up in a slight 'high school bubble' so when I go and visit the school I am filming in, the young people playing the parts are going to have a certain amount of involvement. Of course I'll still make all the decisions, however I want to ask them about what their school and their age group means to them. I hope this will make it more believable.