In the IRT modeling of student responses and items, one dimension was ultimately extracted, with minor violations of local independence, resulting in a 2-PL IRT model. The overall model fit well, with expected as estimated Item Characteristic Curves (ICC's) for items. Items fit well, and covered a wide range of values on the latent continuum. Person parameters, however, were unstable in the face of an insufficient sample size and failure to meet assumptions Future rounds of data collection are discussed to improve model fit, provide more stable parameter estimates, and complete additional iterates of the measure building process.