I went back through the video I recorded from my lap days at High Plains Raceway and came up with the numbers below. I've improved since my first day on the track and had two consistent laps on the second time out so I'm happy about that 
HPR with instructor Friday 5/18/12
1st lap time - 2:36
2nd lap time - 2:38
3rd lap time - 2:45
4th lap time - 2:26
NASA HPR with instructor Sunday 5/27/12
1st lap time - 2:36
2nd lap time - 2:20
3rd lap time - 2:20
HPR with instructor Friday 5/18/12
1st lap time - 2:36
2nd lap time - 2:38
3rd lap time - 2:45
4th lap time - 2:26
NASA HPR with instructor Sunday 5/27/12
1st lap time - 2:36
2nd lap time - 2:20
3rd lap time - 2:20