Unfortunately, as I noted in my blog, there is no research supporting
weekly testing, or even monthly testing as progress monitoring
techniques. The research that has been done and published so far on
RTI has relied on progress monitoring two or three times per year,
none more frequently. I think this is simply because there are no
reliable weekly progress monitoring assessments available. Now if you
were monitoring prerequisite knowledges such as letter name knowledge
or consonant sounds, monitoring those more frequently may be useful
since they typically take only a few weeks to teach. But when it comes
to reading improvement the best assessment strategy is running records
in K-1 and maybe in 2 but what we are really looking for is silent
reading comprehension growth not oral reading accuracy or rate.
Dick Allington