I did a little research to see what velocities kids were throwing summer before senior year to try and see where my son might fit in. I know there are a lot of things that can skew the numbers and I'm not trying to prove or disprove anything. This is just the data I collected.
First these are all RHP. Second I follow a bunch of these schools so I removed any sidearm or submarine pitchers I knew of. These are only velocities I could find on PG or PBR or a few other places and I used the top velocity recorded. I only used the velocity from summer before senior year unless a higher velocity was recorded before that. I was shocked at how many I found that were. The D1 schools are not power 5. I took every college in my home state or within 150 miles of my home. Here are the results. These are the averages from all I found. Also if I didn't find 5 per team I didn't count that school.
D1: total avg 87.3 Top school avg 88.7 Lowest school avg 86.9
D2: total avg 83.1 Top school avg 85.6 Lowest school avg 78
D3: total avg 83.6 Top school avg 84 Lowest school avg 83
NAIA: total avg 81.5 Top school avg 86.5 Lowest school avg 77.5
JC: total avg 83.8 Top school avg 85.6 Lowest school avg 82.2
Another interesting tid bit. Only about half the pitchers on each rooster had a PG or PBR recorded velo.
Also the highest ranked and best record for the D1's was the one with the lowest average velo.