Frank and Jim,

That was precisely what I needed. Thanks for taking the time to help me out.

I am currently leaning in the following direction:

1. Eliminate the online reading quiz.
2. Start most classes with an iRAT, followed by a tRAT. 

Since my class begins at 9:00 am Saturday morning, tardiness is an ongoing
problem. I often begin assignments soon after 9:00 am, but if I were to have
weekly iRATs, students would know that lateness could have a significant
impact on their grades.

Thanks again,
Mike