performers on a mandatory nationwide exam in Colombia. The award allows students to signal their high level of specific skills … when searching for a j ob. These students earn 7 to 12 percent more than otherwise identical students lacking the signal …, implying that reducing information frictions about students' skills could potentially shrink earnings gaps. Our results imply …

estimates, while causal, may also reflect peer effects due to differences in peer quality of non-randomized students. We exploit … universal random assignment of students to high schools in certain areas of South Korea to provide estimates of school effects …

improved the students' mathematical and ethnomathematical skills. The magnitude of the impact on mathematics, of 0 … JADENKÄ has a beneficial effect on the cultural identity of students. Second, results suggest that the effect of the program … in ethnomathematics is stronger among Ngäbere-speaking students and for students whose teachers identify as Ngäbe …