Da True "Region" are the Schools in Lake County. 8)
So for you the Geographically Challenged: East Chicago, All Gary &Hammond schools. Calumet, Crown Point, Griffith, Hanover Central, Highland, Hobart, Lowell, Lake Central, Merrillville, Munster, River Forest, Whiting.
Now although there are a few excellent parochial HS in Da Region: Bishop Noll, and Andrean technically they are not considered Da Region because kids from over the fence or other counties may attend there.
Any questions ;D