After doing a final review, I found one mistake.

According the official Bloomington Speedway results Shane Cottle finished 5th and Brady Short finished 6th on June 24th.

Brady Short's final position did not change, but Shane Cottle moved from 7th to 6th in the final standings.

Here are the updated standings.

Rank	Driver	Points	Pts Behind	Races	Wins	2nd	3rd	4th	5th
1	Brady Short	231	0	23	10	7	2	1	3
2	Chris Windom	226	-5	22	8	10	2	2	0
3	Dave Darland	200	-31	20	7	7	4	2	0
4	Jon Stanbrough	185	-46	21	2	7	7	5	0
5	Coleman Gulick	156	-75	17	6	3	1	4	3
6	Shane Cottle	153	-78	18	3	5	2	3	5
7	Brett Burdette	150	-81	17	4	3	5	2	3
8	Justin Grant	146	-85	16	6	2	2	2	4
9	Casey Shuman	134	-97	14	6	1	4	2	1
10	Hunter Schuerenberg	128	-103	12	7	2	3	0	0

https://www.indianaopenwheel.com/sho...294#post260294

I'm assuming pavement races don't count?

No

The Indiana Open Wheel Sprint Car Driver Championship awards a driver based on their performance during the Indiana dirt sprint car season.