I LOVE the IDPA classifier match. It's an outstanding test of basic skills.
I really like shooting USPSA classifier matches for the same reason.
But mine is a minority opinion I think . . .
Get on the IDPA website and check out clubs in your general geographical area and then email the club coordinators and see who might be running a classifier later this summer.
Check out this link from Collin County IDPA in Texas. It's a very well known primer on shooting the classifier and well worth reading