Four Buddhist schools ( Philosophical)

The four Buddhist schools are;

Vaibhashika,
Sautrantika,
Chittamatra, and
Madhyamaka

(bye-brag-smra-ba,
mdo-sde-pa,
sems-tsam-pa,
dbu-ma-pa in Tibetan).

The two Hinayana schools of Vaibhashika (Great Exposition) and Sautrantika (Sutra) and the two Mahayana schools of Cittamatra (Mind Only, also called Yogachara or Practice of Yoga) and Madhyamaka (Middle Way), of which there are two subschools, Svatantrika (Autonomist) and Prasangika (Consequentialist).