Around here some of the poorer schools in rougher areas (McKeesport, Woodland Hills, Aliquippa, Clairton) generally have some of the best teams.
Several years ago when I played in a senior baseball league, we played a game at Lake Orion high school. The school was huge and the field was all artificial turf.........it was beautiful.
Have a friend whose brother was the head coach at De La Salle Collegiate in Warren, MI. They were a Div. 2 powerhouse. But just like many of the catholic schools, they recruit for their athletic programs, offering breaks in tuition costs.