The North can go a bunch of different ways.
One idea
1: Crown Point, Lake Central, Merrillville, Lafayette Jeff
2: Chesterton, Penn, Portage, Valpo
3: Warsaw, Carroll, Homestead, Noblesville
4: Carmel, Westfield, Zionsville, North Central
5: HSE, FIshers, LC, LN
6: Pike, Ben Davis, Avon, Brownsburg
7: Warren Central, Tech, Southport, Perry Meridian
8: Center Grove, Columbus East/North, Franklin Central
The north might go a few different ways depending on what the IHSAA does with Lafayette Jeff. Someone is going to have to go north.
Another
1: Crown Point, Lake Central, Merrillville, Portage
2: Chesterton, Penn, Valpo, Warsaw
3: Homestead, Carroll, Noblesville, Westfield OR Lafayette Jeff
4: Carmel, Zionsville, North Central, Westfield OR Lafayette Jeff
South stays the same. Pike/BD/Avon/Brownsburg and the Sectional 8 (FC/CN/CE/CG) are pretty much locked in. HSE/Fishers and LC/LN won't be split up so it makes sense to put them in the same sectional. And WC/Tech and the Perry Township schools make much sense. I expect if any Indy-area school goes north, it will be North Central.