It depends on what you are grading him on. I completely ignore wins and losses. I never once commented on how many wins or losses we should or might have since preseason. I knew as does anyone with a small amount of football IQ that this team was not good and probably wouldn't have a lot of wins.
The barometer for how well he has done rests with how well did he coach, how well did the team compete, and how much improvement did we see in the play on the field. First, he failed in building a quality coaching staff. Second, he fielded a team that simply was not ready to play football for the first 8 games of the season. The team regressed in their play from the last year, especially on the oline. They did seem to improve a little over the next few games, but then regressed again against Mizzou and clemsux. Erratic play is not a sign of good coaching. Neither is lack of focus or direction as we saw many times during the year, especially with the oline. We had essentially the same oline and running backs as the previous year and went from a team with the SEC's leading rusher to one that most games could not manage to rush for 100 yds. That is not improvement. Struggling against vastly inferior teams like Troy, ECU, and Vanderbilt is not improvement. Allowing 6 of the 12 teams we played to score on their very first possession is not improvement.
To be fair I will say I saw our defensive backfield show improvement over the year. They were pretty bad in the early part of the season, but played hard and covered well the last half of the season. Their only weakness was that they were not very good at tackling - like the rest of the defense. The other area that looked pretty good was special teams. Our kicker and punter did a good job all year.
As a HC I would give him a D+ at this point. There is a lot of improvement that needs to be made.