In evaluating the Texas system,<cite> Mohler et al. (2011)</cite> used a corpus of ten assignments and two exams from an introductory computer science class. In total, the Texas corpus consists of 2,442 responses, which were collected using an online learning platform. Each response is rated by two annotators with a numerical grade on a 0-5 scale. Annotators were not given any specific instructions besides the scale itself, which resulted in an exact agreement of 57.7%. In order to arrive at a gold standard rating, the numerical average of the two ratings was computed. The data exist in raw, sentence-segmented and parsed versions and are freely available for research use. Table 2 presents a breakdown of the score counts and distribution statistics of the Texas corpus.