One of the several bases I used can be seen here: selenaede.deviantart.com/art/E…
The ponies, in case you haven't noticed, are arranged in the place they are mentioned in the theme song (Starlight, Sweetheart, Melody, Bright Eyes, Patch, Clover and Bon Bon. The boys are either placed next to their crush, as in the case of Ace with Melody or the girl who likes the boy, as in the case of Bright Eyes and Lancer and Sweetheart and Teddy. I tried to put Starlight as close to Ace as I could without messing up the order.
My personal head canon includes a Dream Valley and Coltonvillie High in the same Tri State area that has Canterlot High. The three schools, ironically though somewhat fittingly, do not get along well at all.
i like the girl at the very end (right at end)
That was my second favorite series of MLP