Betas are very important to us here at Microsoft Learning, but so is releasing an exam in a timely manner. Not only because we like to strike while the iron is hot, but also because we have commitments to support the Product Team’s launch. We also have many partners, MCTs and other folks who depend on MSL to release an exam that is in synch with their readiness activities like qualifying for a partner competency or certifying to teach a new class. A long beta also inconveniences those candidates that just want to take the live exam but have to wait for us to process the all the beta data we collect. To this end, it is always a balancing act between collecting all the data we can for psychometric reasons and the time it takes to read and act on each and every comment we receive from each beta candidate.