The study tests 3 research hypotheses on the teaching-research nexus using the administrative data of the HSE University in Russia for 7 years. We confirmed the hypothesis that a lower classroom teaching load is associated with higher research output. Undergraduate courses have a relatively higher negative effect, especially on the probability of producing research output at all. A higher concentration of teaching in some semesters or quarters looks rather ineffective as a way to stimulate higher research productivity. Only a moderate share of English-taught classes (about 20% of the teaching load) is associated with higher research output and only for publications in good international journals. The empirical part of the study is based on zero-inflated Poisson and zero-inflated negative binomial models. This study comes to contribute to the development of literature discussing a mechanism and possible implications in teaching load composition as an essential part of the academic contract.