The Taiwanese Proficiency Test (TPT) is a newly developed language testing scheme for educational purposes in Taiwan. Several preliminary tests were conducted and the latest one was held in November of 2008. In the test, the test-takers were assigned a language level according to the scores they received. The relationship between language levels and scores is calculated based on the statistical results of 160 sampled test-takers by using ordinal logistic regression. Its accuracy for predicting test-takers' language levels reaches as high as 0.68.