The "new" schools (Sakya, Kagyu, and Geluk) divide the teachings into only four levels. The first three are the same as in the Nyingma school. The last level is simply called Anuttarayogatantra ("Highest Yoga Tantra"). These Highest Yoga Tantras are divided into "mother", "father" and "non-dual" tantras. The new schools use a practice called Mahamudra in place of Dzogchen.