Evaluation on the foreign student's competence of Indonesian language is required to assess their achievement. This research aimed to identify the difficulty level of test instrument, analyze the difference of foreign students' competence for Indonesian language and to analyze the correlation of students' competence over various objective test formats. This research was carried out between August 2017 to August 2018 to the 16 students of Muhammadiyah Universities involved in the Darmasiswa scholarship and the developing countries cooperation program. The formats of objective test were: true-false, directed gap filling, multiple choice, correct-incorrect, gap filling and matching. Kruskal-Wallis and bivariate correlation were carried out as the statistical analysis. The difficulty level of test instrument was between the very easy to moderate level. As the impact, students' score achievement was ranging from medium to high. Significant difference was identified both in the difficulty level and score achievement.