Higher education institutions in the United States provide placement essay tests to ensure international students' readiness for college courses. The high-stakes nature of placement tests makes educators and researchers seek significant components of differentiating levels of placement tests. This study investigated the prediction of two levels (i.e., low vs. intermediate) of 411 placement test essays written by Chinese international students and examined the influence of linguistic and demographic features on placement test levels through logistic regression. The results showed that the type-token ratio, tokens, college type, and graduate status were significant indicators to differentiate students' placement test essays. However, several demographic features were not statistically significant. The results may shed light on improving writing skills of Chinese international students who scored intermediate or low in the placement tests.